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Merge pull request #1390 from Project-OSRM/feature/width_penalty

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implements a penalty for very narrow roads
This commit is contained in:
Dennis Luxen 2015-02-24 08:56:11 +01:00
commit c215c42289
2 changed files with 40 additions and 2 deletions
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20
features/car/maxspeed.feature
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@ -73,3 +73,23 @@ OSRM will use 4/5 of the projected free-flow speed.
| runway | | | 100 | | | |
| runway | | | | 100 | | |
| runway | | | | | 100 | |
Scenario: Car - Too narrow streets should be ignored or incur a penalty
Then routability should be
| highway | maxspeed | width | maxspeed:forward | maxspeed:backward | forw | backw |
| primary | | | | | 63 km/h | 63 km/h |
| primary | | 3 | | | 32 km/h | 32 km/h |
| primary | 60 | | | | 59 km/h | 59 km/h |
| primary | 60 | 3 | | | 30 km/h | 30 km/h |
| primary | | | 60 | | 59 km/h | 63 km/h |
| primary | | 3 | 60 | | 30 km/h | 32 km/h |
| primary | | | | 60 | 63 km/h | 59 km/h |
| primary | | 3 | | 60 | 32 km/h | 30 km/h |
| primary | 15 | | 60 | | 59 km/h | 23 km/h |
| primary | 15 | 3 | 60 | | 30 km/h | 7 km/h |
| primary | 15 | | | 60 | 23 km/h | 59 km/h |
| primary | 15 | 3 | | 60 | 7 km/h | 30 km/h |
| primary | 15 | | 30 | 60 | 34 km/h | 59 km/h |
| primary | 15 | 3 | 30 | 60 | 15 km/h | 30 km/h |

22
profiles/car.lua
View File

@ -248,6 +248,12 @@ function way_function (way, result)
return
end
local width = math.huge
local width_string = way:get_value_by_key("width")
if width_string and tonumber(width_string:match("%d*")) then
width = tonumber(width_string:match("%d*"))
end
-- Check if we are allowed to access the way
local access = find_access_tag(way, access_tags_hierachy)
if access_tag_blacklist[access] then
@ -385,12 +391,24 @@ function way_function (way, result)
result.ignore_in_grid = true
end
-- scale speeds to get better avg driving times
if result.forward_speed > 0 then
result.forward_speed = result.forward_speed*speed_reduction + 11;
local scaled_speed = result.forward_speed*speed_reduction + 11;
local penalized_speed = math.huge
if width <= 3 then
penalized_speed = result.forward_speed / 2;
end
result.forward_speed = math.min(penalized_speed, scaled_speed)
end
if result.backward_speed > 0 then
result.backward_speed = result.backward_speed*speed_reduction + 11;
local scaled_speed = result.backward_speed*speed_reduction + 11;
local penalized_speed = math.huge
if width <= 3 then
penalized_speed = result.backward_speed / 2;
end
result.backward_speed = math.min(penalized_speed, scaled_speed)
end
end