Roundabout Intersections are roundabouts with up to four ways and turn
angles which makes the turns obvious, e.g. as in:
```
    *
    *
* *   * *
    *
    *
```
but not
```
     *
    *
* *   *
    * *
     * *
```
For Roundabout Intersections we issue instructions such as
"turn <direction>" instead of "take the <nth> exit".
At the moment we have a limit on the radius for these Roundabout
Intersections of 5 meters. Which fails to classify a wide range of
Roundabout Intersections in the US (with the US-wide streets).
This changeset removes the Roundabout Intersection radius limit:
- if the roundabout is larger than a threshold and is named we classify
  it as a rotary
- if the roundabout matches our criteria for Roundabout Intersections
  we classify it as a Roundabout Intersection
- else fallback to plain old Roundabout
There is a second issue with determining a roundabout's radius.
But that's for another pull request (tracking in #2716).
References:
- https://github.com/Project-OSRM/osrm-backend/issues/2716
		
	
			
		
			
				
	
	
		
			494 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			Gherkin
		
	
	
	
	
	
			
		
		
	
	
			494 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			Gherkin
		
	
	
	
	
	
| @routing  @guidance
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| Feature: Basic Roundabout
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| 
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|     Background:
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|         Given the profile "car"
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|         Given a grid size of 3 meters
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| 
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|     Scenario: Enter and Exit
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|         Given the node map
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|             |   |   | a |   |   |
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|             |   |   | b |   |   |
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|             | h | g |   | c | d |
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|             |   |   | e |   |   |
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|             |   |   | f |   |   |
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| 
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|        And the ways
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|             | nodes  | junction   |
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|             | ab     |            |
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|             | cd     |            |
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|             | ef     |            |
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|             | gh     |            |
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|             | bgecb  | roundabout |
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| 
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|        When I route I should get
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|            | waypoints | route    | turns                                         |
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|            | a,d       | ab,cd,cd | depart,roundabout turn left exit-3,arrive     |
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|            | a,f       | ab,ef,ef | depart,roundabout turn straight exit-2,arrive |
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|            | a,h       | ab,gh,gh | depart,roundabout turn right exit-1,arrive    |
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|            | d,f       | cd,ef,ef | depart,roundabout turn left exit-3,arrive     |
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|            | d,h       | cd,gh,gh | depart,roundabout turn straight exit-2,arrive |
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|            | d,a       | cd,ab,ab | depart,roundabout turn right exit-1,arrive    |
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|            | f,h       | ef,gh,gh | depart,roundabout turn left exit-3,arrive     |
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|            | f,a       | ef,ab,ab | depart,roundabout turn straight exit-2,arrive |
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|            | f,d       | ef,cd,cd | depart,roundabout turn right exit-1,arrive    |
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|            | h,a       | gh,ab,ab | depart,roundabout turn left exit-3,arrive     |
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|            | h,d       | gh,cd,cd | depart,roundabout turn straight exit-2,arrive |
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|            | h,f       | gh,ef,ef | depart,roundabout turn right exit-1,arrive    |
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| 
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|     Scenario: Enter and Exit - Rotated
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|         Given the node map
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|             | a |   |   | d |
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|             |   | b | c |   |
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|             |   | g | e |   |
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|             | h |   |   | f |
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| 
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|        And the ways
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|             | nodes  | junction   |
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|             | ab     |            |
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|             | cd     |            |
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|             | ef     |            |
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|             | gh     |            |
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|             | bgecb  | roundabout |
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| 
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|        When I route I should get
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|            | waypoints | route    | turns                                         |
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|            | a,d       | ab,cd,cd | depart,roundabout turn left exit-3,arrive     |
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|            | a,f       | ab,ef,ef | depart,roundabout turn straight exit-2,arrive |
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|            | a,h       | ab,gh,gh | depart,roundabout turn right exit-1,arrive    |
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|            | d,f       | cd,ef,ef | depart,roundabout turn left exit-3,arrive     |
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|            | d,h       | cd,gh,gh | depart,roundabout turn straight exit-2,arrive |
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|            | d,a       | cd,ab,ab | depart,roundabout turn right exit-1,arrive    |
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|            | f,h       | ef,gh,gh | depart,roundabout turn left exit-3,arrive     |
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|            | f,a       | ef,ab,ab | depart,roundabout turn straight exit-2,arrive |
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|            | f,d       | ef,cd,cd | depart,roundabout turn right exit-1,arrive    |
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|            | h,a       | gh,ab,ab | depart,roundabout turn left exit-3,arrive     |
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|            | h,d       | gh,cd,cd | depart,roundabout turn straight exit-2,arrive |
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|            | h,f       | gh,ef,ef | depart,roundabout turn right exit-1,arrive    |
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| 
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|     Scenario: Only Enter
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|         Given the node map
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|             |   |   | a |   |   |
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|             |   |   | b |   |   |
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|             | d | c |   | g | h |
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|             |   |   | e |   |   |
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|             |   |   | f |   |   |
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| 
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|        And the ways
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|             | nodes  | junction   |
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|             | ab     |            |
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|             | cd     |            |
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|             | ef     |            |
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|             | gh     |            |
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|             | bcegb  | roundabout |
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| 
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|        When I route I should get
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|            | waypoints | route          | turns                                   |
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|            | a,c       | ab,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | a,e       | ab,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | a,g       | ab,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | d,e       | cd,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | d,g       | cd,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | d,b       | cd,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | f,g       | ef,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | f,b       | ef,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | f,c       | ef,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | h,b       | gh,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | h,c       | gh,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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|            | h,e       | gh,bcegb,bcegb | depart,roundabout-exit-undefined,arrive |
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| 
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|     Scenario: Only Exit
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|         Given the node map
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|             |   |   | a |   |   |
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|             |   |   | b |   |   |
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|             | d | c |   | g | h |
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|             |   |   | e |   |   |
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|             |   |   | f |   |   |
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| 
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|        And the ways
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|             | nodes  | junction   |
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|             | ab     |            |
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|             | cd     |            |
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|             | ef     |            |
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|             | gh     |            |
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|             | bcegb  | roundabout |
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| 
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|        When I route I should get
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|            | waypoints | route       | turns                           |
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|            | b,d       | bcegb,cd,cd | depart,roundabout-exit-1,arrive |
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|            | b,f       | bcegb,ef,ef | depart,roundabout-exit-2,arrive |
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|            | b,h       | bcegb,gh,gh | depart,roundabout-exit-3,arrive |
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|            | c,f       | bcegb,ef,ef | depart,roundabout-exit-1,arrive |
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|            | c,h       | bcegb,gh,gh | depart,roundabout-exit-2,arrive |
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|            | c,a       | bcegb,ab,ab | depart,roundabout-exit-3,arrive |
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|            | e,h       | bcegb,gh,gh | depart,roundabout-exit-1,arrive |
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|            | e,a       | bcegb,ab,ab | depart,roundabout-exit-2,arrive |
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|            | e,d       | bcegb,cd,cd | depart,roundabout-exit-3,arrive |
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|            | g,a       | bcegb,ab,ab | depart,roundabout-exit-1,arrive |
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|            | g,d       | bcegb,cd,cd | depart,roundabout-exit-2,arrive |
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|            | g,f       | bcegb,ef,ef | depart,roundabout-exit-3,arrive |
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|       #phantom node snapping can result in a full round-trip here, therefore we cannot test b->a and the other direct exits
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| 
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|     Scenario: Drive Around
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|         Given the node map
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|             |   |   | a |   |   |
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|             |   |   | b |   |   |
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|             | d | c |   | g | h |
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|             |   |   | e |   |   |
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|             |   |   | f |   |   |
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| 
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|        And the ways
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|             | nodes  | junction   |
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|             | ab     |            |
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|             | cd     |            |
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|             | ef     |            |
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|             | gh     |            |
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|             | bcegb  | roundabout |
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| 
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|        When I route I should get
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|            | waypoints | route       | turns         |
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|            | b,c       | bcegb,bcegb | depart,arrive |
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|            | b,e       | bcegb,bcegb | depart,arrive |
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|            | b,g       | bcegb,bcegb | depart,arrive |
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|            | c,e       | bcegb,bcegb | depart,arrive |
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|            | c,g       | bcegb,bcegb | depart,arrive |
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|            | c,b       | bcegb,bcegb | depart,arrive |
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|            | e,g       | bcegb,bcegb | depart,arrive |
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|            | e,b       | bcegb,bcegb | depart,arrive |
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|            | e,c       | bcegb,bcegb | depart,arrive |
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|            | g,b       | bcegb,bcegb | depart,arrive |
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|            | g,c       | bcegb,bcegb | depart,arrive |
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|            | g,e       | bcegb,bcegb | depart,arrive |
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| 
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|      Scenario: Mixed Entry and Exit - Not an Intersection
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|         Given the node map
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|            |   | c |   | a |   |
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|            | j |   | b |   | f |
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|            |   | k |   | e |   |
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|            | l |   | h |   | d |
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|            |   | g |   | i |   |
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| 
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|         And the ways
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|            | nodes | junction   | oneway |
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|            | abc   |            | yes    |
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|            | def   |            | yes    |
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|            | ghi   |            | yes    |
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|            | jkl   |            | yes    |
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|            | bkheb | roundabout | yes    |
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| 
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|         When I route I should get
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|            | waypoints | route       | turns                           |
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|            | a,c       | abc,abc,abc | depart,roundabout-exit-1,arrive |
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|            | a,l       | abc,jkl,jkl | depart,roundabout-exit-2,arrive |
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|            | a,i       | abc,ghi,ghi | depart,roundabout-exit-3,arrive |
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|            | a,f       | abc,def,def | depart,roundabout-exit-4,arrive |
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|            | d,f       | def,def,def | depart,roundabout-exit-1,arrive |
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|            | d,c       | def,abc,abc | depart,roundabout-exit-2,arrive |
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|            | d,l       | def,jkl,jkl | depart,roundabout-exit-3,arrive |
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|            | d,i       | def,ghi,ghi | depart,roundabout-exit-4,arrive |
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|            | g,i       | ghi,ghi,ghi | depart,roundabout-exit-1,arrive |
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|            | g,f       | ghi,def,def | depart,roundabout-exit-2,arrive |
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|            | g,c       | ghi,abc,abc | depart,roundabout-exit-3,arrive |
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|            | g,l       | ghi,jkl,jkl | depart,roundabout-exit-4,arrive |
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|            | j,l       | jkl,jkl,jkl | depart,roundabout-exit-1,arrive |
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|            | j,i       | jkl,ghi,ghi | depart,roundabout-exit-2,arrive |
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|            | j,f       | jkl,def,def | depart,roundabout-exit-3,arrive |
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|            | j,c       | jkl,abc,abc | depart,roundabout-exit-4,arrive |
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| 
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|     Scenario: Segregated roads - Not an intersection
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|         Given the node map
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|            |   | a |   | c |   |
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|            | l |   | b |   | d |
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|            |   | k |   | e |   |
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|            | j |   | h |   | f |
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|            |   | i |   | g |   |
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| 
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|         And the ways
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|            | nodes | junction   | oneway |
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|            | abc   |            | yes    |
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|            | def   |            | yes    |
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|            | ghi   |            | yes    |
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|            | jkl   |            | yes    |
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|            | bkheb | roundabout | yes    |
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| 
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|         When I route I should get
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|            | waypoints | route       | turns                           |
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|            | a,c       | abc,abc,abc | depart,roundabout-exit-4,arrive |
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|            | a,l       | abc,jkl,jkl | depart,roundabout-exit-1,arrive |
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|            | a,i       | abc,ghi,ghi | depart,roundabout-exit-2,arrive |
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|            | a,f       | abc,def,def | depart,roundabout-exit-3,arrive |
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|            | d,f       | def,def,def | depart,roundabout-exit-4,arrive |
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|            | d,c       | def,abc,abc | depart,roundabout-exit-1,arrive |
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|            | d,l       | def,jkl,jkl | depart,roundabout-exit-2,arrive |
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|            | d,i       | def,ghi,ghi | depart,roundabout-exit-3,arrive |
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|            | g,i       | ghi,ghi,ghi | depart,roundabout-exit-4,arrive |
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|            | g,f       | ghi,def,def | depart,roundabout-exit-1,arrive |
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|            | g,c       | ghi,abc,abc | depart,roundabout-exit-2,arrive |
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|            | g,l       | ghi,jkl,jkl | depart,roundabout-exit-3,arrive |
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|            | j,l       | jkl,jkl,jkl | depart,roundabout-exit-4,arrive |
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|            | j,i       | jkl,ghi,ghi | depart,roundabout-exit-1,arrive |
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|            | j,f       | jkl,def,def | depart,roundabout-exit-2,arrive |
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|            | j,c       | jkl,abc,abc | depart,roundabout-exit-3,arrive |
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| 
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|        Scenario: Collinear in X
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|         Given the node map
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|             | a | b | c | d | f |
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|             |   |   | e |   |   |
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| 
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|         And the ways
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|             | nodes | junction   |
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|             | ab    |            |
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|             | bcdb  | roundabout |
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|             | ce    |            |
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|             | df    |            |
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| 
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|         When I route I should get
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|             | waypoints | route    | turns                           |
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|             | a,e       | ab,ce,ce | depart,roundabout-exit-1,arrive |
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|             | a,f       | ab,df,df | depart,roundabout-exit-2,arrive |
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| 
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|        Scenario: Collinear in X,Y
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|         Given the node map
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|             | a |   |   |
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|             | b |   |   |
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|             | c | d | f |
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|             | e |   |   |
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| 
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|         And the ways
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|             | nodes | junction   |
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|             | ab    |            |
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|             | bcdb  | roundabout |
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|             | ce    |            |
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|             | df    |            |
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| 
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|         When I route I should get
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|             | waypoints | route    | turns                                         |
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|             | a,e       | ab,ce,ce | depart,roundabout turn straight exit-1,arrive |
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|             | a,f       | ab,df,df | depart,roundabout turn left exit-2,arrive     |
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| 
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|        Scenario: Collinear in X,Y
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|         Given the node map
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|             | a |   |   |
 | |
|             | d |   |   |
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|             | b | c | f |
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|             | e |   |   |
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| 
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|         And the ways
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|             | nodes | junction   |
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|             | ad    |            |
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|             | bcdb  | roundabout |
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|             | be    |            |
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|             | cf    |            |
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| 
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|         When I route I should get
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|             | waypoints | route    | turns                                         |
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|             | a,e       | ad,be,be | depart,roundabout turn straight exit-1,arrive |
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|             | a,f       | ad,cf,cf | depart,roundabout turn left exit-2,arrive     |
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| 
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|        Scenario: Collinear in X,Y
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|         Given the node map
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|             | a |   |   |
 | |
|             | c |   |   |
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|             | d | b | f |
 | |
|             | e |   |   |
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| 
 | |
|         And the ways
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|             | nodes | junction   |
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|             | ac    |            |
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|             | bcdb  | roundabout |
 | |
|             | de    |            |
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|             | bf    |            |
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| 
 | |
|         When I route I should get
 | |
|             | waypoints | route    | turns                                         |
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|             | a,e       | ac,de,de | depart,roundabout turn straight exit-1,arrive |
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|             | a,f       | ac,bf,bf | depart,roundabout turn left exit-2,arrive     |
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| 
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|     Scenario: Enter and Exit -- too complex
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|         Given the node map
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|             | j |   | a |   |   |
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|             |   | i | b |   |   |
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|             |   | g |   | c | d |
 | |
|             | h |   | e |   |   |
 | |
|             |   |   | f |   |   |
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| 
 | |
|        And the ways
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|             | nodes  | junction   |
 | |
|             | ab     |            |
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|             | ij     |            |
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|             | cd     |            |
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|             | ef     |            |
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|             | gh     |            |
 | |
|             | bigecb | roundabout |
 | |
| 
 | |
|        When I route I should get
 | |
|            | waypoints | route    | turns                           |
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|            | a,d       | ab,cd,cd | depart,roundabout-exit-4,arrive |
 | |
|            | a,f       | ab,ef,ef | depart,roundabout-exit-3,arrive |
 | |
|            | a,h       | ab,gh,gh | depart,roundabout-exit-2,arrive |
 | |
|            | d,f       | cd,ef,ef | depart,roundabout-exit-4,arrive |
 | |
|            | d,h       | cd,gh,gh | depart,roundabout-exit-3,arrive |
 | |
|            | d,a       | cd,ab,ab | depart,roundabout-exit-1,arrive |
 | |
|            | f,h       | ef,gh,gh | depart,roundabout-exit-4,arrive |
 | |
|            | f,a       | ef,ab,ab | depart,roundabout-exit-2,arrive |
 | |
|            | f,d       | ef,cd,cd | depart,roundabout-exit-1,arrive |
 | |
|            | h,a       | gh,ab,ab | depart,roundabout-exit-3,arrive |
 | |
|            | h,d       | gh,cd,cd | depart,roundabout-exit-2,arrive |
 | |
|            | h,f       | gh,ef,ef | depart,roundabout-exit-1,arrive |
 | |
| 
 | |
|     Scenario: Enter and Exit -- Non-Distinct
 | |
|         Given the node map
 | |
|            |   |   | a |   |   |
 | |
|            |   |   | b |   |   |
 | |
|            |   | g |   | c | d |
 | |
|            |   |   | e |   |   |
 | |
|            | h |   | f |   |   |
 | |
| 
 | |
|        And the ways
 | |
|             | nodes | junction   |
 | |
|             | ab    |            |
 | |
|             | cd    |            |
 | |
|             | ef    |            |
 | |
|             | gh    |            |
 | |
|             | bgecb | roundabout |
 | |
| 
 | |
|        When I route I should get
 | |
|            | waypoints | route    | turns                           |
 | |
|            | a,d       | ab,cd,cd | depart,roundabout-exit-3,arrive |
 | |
|            | a,f       | ab,ef,ef | depart,roundabout-exit-2,arrive |
 | |
|            | a,h       | ab,gh,gh | depart,roundabout-exit-1,arrive |
 | |
|            | d,f       | cd,ef,ef | depart,roundabout-exit-3,arrive |
 | |
|            | d,h       | cd,gh,gh | depart,roundabout-exit-2,arrive |
 | |
|            | d,a       | cd,ab,ab | depart,roundabout-exit-1,arrive |
 | |
|            | f,h       | ef,gh,gh | depart,roundabout-exit-3,arrive |
 | |
|            | f,a       | ef,ab,ab | depart,roundabout-exit-2,arrive |
 | |
|            | f,d       | ef,cd,cd | depart,roundabout-exit-1,arrive |
 | |
|            | h,a       | gh,ab,ab | depart,roundabout-exit-3,arrive |
 | |
|            | h,d       | gh,cd,cd | depart,roundabout-exit-2,arrive |
 | |
|            | h,f       | gh,ef,ef | depart,roundabout-exit-1,arrive |
 | |
| 
 | |
|     Scenario: Enter and Exit -- Bearing
 | |
|         Given the node map
 | |
|            |   |   | a |   |   |
 | |
|            |   |   | b |   |   |
 | |
|            | h | g |   | c | d |
 | |
|            |   |   | e |   |   |
 | |
|            |   |   | f |   |   |
 | |
| 
 | |
|        And the ways
 | |
|             | nodes | junction   |
 | |
|             | ab    |            |
 | |
|             | cd    |            |
 | |
|             | ef    |            |
 | |
|             | gh    |            |
 | |
|             | bgecb | roundabout |
 | |
| 
 | |
|        When I route I should get
 | |
|            | waypoints | route    | turns                                         | bearing                |
 | |
|            | a,d       | ab,cd,cd | depart,roundabout turn left exit-3,arrive     | 0->180,180->224,90->0  |
 | |
|            | a,f       | ab,ef,ef | depart,roundabout turn straight exit-2,arrive | 0->180,180->224,180->0 |
 | |
|            | a,h       | ab,gh,gh | depart,roundabout turn right exit-1,arrive    | 0->180,180->224,270->0 |
 | |
| 
 | |
|     Scenario: Enter and Exit - Bearings
 | |
|         Given the node map
 | |
|             |   |   |   | a |   |   |   |
 | |
|             |   |   |   |   |   |   |   |
 | |
|             |   |   | i | b | l |   |   |
 | |
|             | h |   | g |   | c |   | d |
 | |
|             |   |   | j | e | k |   |   |
 | |
|             |   |   |   |   |   |   |   |
 | |
|             |   |   |   | f |   |   |   |
 | |
| 
 | |
|        And the ways
 | |
|             | nodes      | junction   |
 | |
|             | ab         |            |
 | |
|             | cd         |            |
 | |
|             | ef         |            |
 | |
|             | gh         |            |
 | |
|             | bigjekclb  | roundabout |
 | |
| 
 | |
|        When I route I should get
 | |
|            | waypoints | route    | turns                                         | bearing                |
 | |
|            | a,d       | ab,cd,cd | depart,roundabout turn left exit-3,arrive     | 0->180,180->270,90->0  |
 | |
|            | a,f       | ab,ef,ef | depart,roundabout turn straight exit-2,arrive | 0->180,180->270,180->0 |
 | |
|            | a,h       | ab,gh,gh | depart,roundabout turn right exit-1,arrive    | 0->180,180->270,270->0 |
 | |
| 
 | |
|     Scenario: Large radius Roundabout Intersection and ways modelled out: East Mission St, North 7th St
 | |
|     # http://www.openstreetmap.org/way/348812150
 | |
|     # Note: grid size is 3 meter, this roundabout is more like 5-10 meters in radius
 | |
|         Given the node map
 | |
|            |   |   |   | a |   |   |   |   |   |
 | |
|            |   |   |   |   |   |   |   |   |   |
 | |
|            |   |   |   | b |   | n |   |   |   |
 | |
|            |   |   |   |   |   |   |   |   |   |
 | |
|            |   |   | c |   |   |   | m |   |   |
 | |
|            |   |   |   |   |   |   |   |   |   |
 | |
|            | e |   | d |   |   |   | k |   | l |
 | |
|            |   |   |   |   |   |   |   |   |   |
 | |
|            |   |   | f |   |   |   | j |   |   |
 | |
|            |   |   |   |   |   |   |   |   |   |
 | |
|            |   |   |   | g |   | i |   |   |   |
 | |
|            |   |   |   |   |   |   |   |   |   |
 | |
|            |   |   |   | h |   |   |   |   |   |
 | |
| 
 | |
|        And the ways
 | |
|             | nodes       | junction   | highway  | name            |
 | |
|             | ab          |            | tertiary | North 7th St    |
 | |
|             | ed          |            | tertiary | East Mission St |
 | |
|             | hg          |            | tertiary | North 7th St    |
 | |
|             | lk          |            | tertiary | East Mission St |
 | |
|             | bcdfgijkmnb | roundabout | tertiary | Roundabout      |
 | |
| 
 | |
|        When I route I should get
 | |
|            | waypoints | route                                           | turns                                         |
 | |
|            | a,e       | North 7th St,East Mission St,East Mission St    | depart,roundabout turn right exit-1,arrive    |
 | |
|            | a,h       | North 7th St,North 7th St,North 7th St          | depart,roundabout turn straight exit-2,arrive |
 | |
|            | a,l       | North 7th St,East Mission St,East Mission St    | depart,roundabout turn left exit-3,arrive     |
 | |
|            | h,l       | North 7th St,East Mission St,East Mission St    | depart,roundabout turn right exit-1,arrive    |
 | |
|            | h,a       | North 7th St,North 7th St,North 7th St          | depart,roundabout turn straight exit-2,arrive |
 | |
|            | h,e       | North 7th St,East Mission St,East Mission St    | depart,roundabout turn left exit-3,arrive     |
 | |
|            | e,h       | East Mission St,North 7th St,North 7th St       | depart,roundabout turn right exit-1,arrive    |
 | |
|            | e,l       | East Mission St,East Mission St,East Mission St | depart,roundabout turn straight exit-2,arrive |
 | |
|            | e,a       | East Mission St,North 7th St,North 7th St       | depart,roundabout turn left exit-3,arrive     |
 | |
|            | l,a       | East Mission St,North 7th St,North 7th St       | depart,roundabout turn right exit-1,arrive    |
 | |
|            | l,e       | East Mission St,East Mission St,East Mission St | depart,roundabout turn straight exit-2,arrive |
 | |
|            | l,h       | East Mission St,North 7th St,North 7th St       | depart,roundabout turn left exit-3,arrive     |
 | |
| 
 | |
|     Scenario: Enter and Exit - Traffic Signals
 | |
|         Given the node map
 | |
|             |   |   | a |   |   |
 | |
|             |   | i | b | l |   |
 | |
|             | h | g |   | c | d |
 | |
|             |   | j | e | k |   |
 | |
|             |   |   | f |   |   |
 | |
| 
 | |
|        And the nodes
 | |
|             | node | highway         |
 | |
|             | i    | traffic_signals |
 | |
|             | j    | traffic_signals |
 | |
|             | k    | traffic_signals |
 | |
|             | l    | traffic_signals |
 | |
| 
 | |
|        And the ways
 | |
|             | nodes     | junction   |
 | |
|             | ab        |            |
 | |
|             | cd        |            |
 | |
|             | ef        |            |
 | |
|             | gh        |            |
 | |
|             | bigjekclb | roundabout |
 | |
| 
 | |
|        When I route I should get
 | |
|            | waypoints | route    | turns                                         |
 | |
|            | a,d       | ab,cd,cd | depart,roundabout turn left exit-3,arrive     |
 | |
|            | a,f       | ab,ef,ef | depart,roundabout turn straight exit-2,arrive |
 | |
|            | a,h       | ab,gh,gh | depart,roundabout turn right exit-1,arrive    |
 | |
|            | d,f       | cd,ef,ef | depart,roundabout turn left exit-3,arrive     |
 | |
|            | d,h       | cd,gh,gh | depart,roundabout turn straight exit-2,arrive |
 | |
|            | d,a       | cd,ab,ab | depart,roundabout turn right exit-1,arrive    |
 | |
|            | f,h       | ef,gh,gh | depart,roundabout turn left exit-3,arrive     |
 | |
|            | f,a       | ef,ab,ab | depart,roundabout turn straight exit-2,arrive |
 | |
|            | f,d       | ef,cd,cd | depart,roundabout turn right exit-1,arrive    |
 | |
|            | h,a       | gh,ab,ab | depart,roundabout turn left exit-3,arrive     |
 | |
|            | h,d       | gh,cd,cd | depart,roundabout turn straight exit-2,arrive |
 | |
|            | h,f       | gh,ef,ef | depart,roundabout turn right exit-1,arrive    |
 |