osrm-backend/features/restrictions.feature

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@routing @restrictions
Feature: Turn restrictions
Handle turn restrictions as defined by http://wiki.openstreetmap.org/wiki/Relation:restriction
Note that if u-turns are allowed, turn restrictions can lead to suprising, but correct, routes.
#left side
@restriction_left @no_left_turn @no_turn
Scenario: No left turn, no way to reach destination
Given the nodes
| w | j |
| | s |
And the ways
| nodes |
| sj |
| wj |
And the relations
| from | to | via | restriction |
| sj | wj | j | no_left_turn |
When I route I should get
| from | to | route |
| s | w | |
| w | s | wj,sj |
@restriction_left @no_left_turn @no_turn
Scenario: No left turn, don't use u-turns to reach destination
Given the nodes
| | n | |
| w | j | e |
| | s | |
And the ways
| nodes |
| nj |
| ej |
| sj |
| wj |
And the relations
| from | to | via | restriction |
| sj | wj | j | no_left_turn |
When I route I should get
| from | to | route |
| s | w | |
| s | n | sj,nj |
| s | e | sj,ej |
| w | n | wj,nj |
| w | e | wj,ej |
| w | s | wj,sj |
| n | e | nj,ej |
| n | s | nj,sj |
| n | w | nj,wj |
| e | s | ej,sj |
| e | w | ej,wj |
| e | n | ej,nj |
@restriction_left @no_left_turn @no_turn
Scenario: No left turn, go around the block instead
Given the nodes
| y | n | |
| w | j | e |
| | s | |
And the ways
| nodes |
| nj |
| ej |
| sj |
| wj |
| wyn |
And the relations
| from | to | via | restriction |
| sj | wj | j | no_left_turn |
When I route I should get
| from | to | route |
| s | w | sj,nj,wyn |
| s | n | sj,nj |
| s | e | sj,ej |
| w | n | wj,nj |
| w | e | wj,ej |
| w | s | wj,sj |
| n | e | nj,ej |
| n | s | nj,sj |
| n | w | nj,wj |
| e | s | ej,sj |
| e | w | ej,wj |
| e | n | ej,nj |
@restriction_left @only_left_turn @must_turn
Scenario: Only left turn, don't use u-turns to reach destination
Given the nodes
| | n | |
| w | j | e |
| | s | |
And the ways
| nodes |
| nj |
| ej |
| sj |
| wj |
And the relations
| from | to | via | restriction |
| sj | wj | j | only_restriction_left |
When I route I should get
| from | to | route |
| s | w | sj,wj |
| s | n | |
| s | e | |
| w | n | wj,nj |
| w | e | wj,ej |
| w | s | wj,sj |
| n | e | nj,ej |
| n | s | nj,sj |
| n | w | nj,wj |
| e | s | ej,sj |
| e | w | ej,wj |
| e | n | ej,nj |
#right side
@restriction_right @no_right_turn @no_turn
Scenario: No right turn, no way to reach destination
Given the nodes
| j | e |
| s | |
And the ways
| nodes |
| ej |
| sj |
And the relations
| from | to | via | restriction |
| sj | ej | j | no_right_turn |
When I route I should get
| from | to | route |
| s | e | |
| e | s | ej,sj |
@restriction_right @no_right_turn @no_turn
Scenario: No right turn, don't use u-turns to reach destination
Given the nodes
| | n | |
| w | j | e |
| | s | |
And the ways
| nodes |
| nj |
| ej |
| sj |
| wj |
And the relations
| from | to | via | restriction |
| sj | ej | j | no_right_turn |
When I route I should get
| from | to | route |
| s | w | sj,wj |
| s | n | sj,nj |
| s | e | |
| w | n | wj,nj |
| w | e | wj,ej |
| w | s | wj,sj |
| n | e | nj,ej |
| n | s | nj,sj |
| n | w | nj,wj |
| e | s | ej,sj |
| e | w | ej,wj |
| e | n | ej,nj |
@restriction_right @no_right_turn @no_turn
Scenario: No right turn, go around the block instead
Given the nodes
| | n | y |
| w | j | e |
| | s | |
And the ways
| nodes |
| nj |
| ej |
| sj |
| wj |
| nye |
And the relations
| from | to | via | restriction |
| sj | ej | j | no_right_turn |
When I route I should get
| from | to | route |
| s | w | sj,wj |
| s | n | sj,nj |
| s | e | sj,nj,nye |
| w | n | wj,nj |
| w | e | wj,ej |
| w | s | wj,sj |
| n | e | nj,ej |
| n | s | nj,sj |
| n | w | nj,wj |
| e | s | ej,sj |
| e | w | ej,wj |
| e | n | ej,nj |
@restriction_right @only_right_turn @must_turn
Scenario: Right turn only, don't use u-turns to reach destination
Given the nodes
| | n | |
| w | j | e |
| | s | |
And the ways
| nodes |
| nj |
| ej |
| sj |
| wj |
And the relations
| from | to | via | restriction |
| sj | ej | j | only_right_turn |
When I route I should get
| from | to | route |
| s | w | |
| s | n | |
| s | e | sj,ej |
| w | n | wj,nj |
| w | e | wj,ej |
| w | s | wj,sj |
| n | e | nj,ej |
| n | s | nj,sj |
| n | w | nj,wj |
| e | s | ej,sj |
| e | w | ej,wj |
| e | n | ej,nj |
@no_u_turn
Scenario: No U-turn
Given the nodes
| | b | |
| | | |
| c | | a |
And the ways
| nodes |
| ab |
| bc |
And the relations
| from | to | via | restriction |
| ab | bc | b | no_u_turn |
When I route I should get
| from | to | route |
| a | c | |
| c | a | bc,ab |