Using under-construction highways gives very long travel times

Open Source Routing Engine
1

Hello! I’m trying to enable travelling by car on under-construction highways. Mainly the focus is on the E4 Stockholm bypass project, which includes a bypass to the west of Stockholm “Förbifart Stockholm”. Eventually I was able to get it working by using this custom_model:

{

“distance_influence”: 15,

“priority”: [

{ “if”: “road_class == CONSTRUCTION”, “multiply_by”: “10” },

{ “else_if”: “car_access”, “multiply_by”: “1” },

{ “else”: “”, “multiply_by”: “0” }

],

“speed”: [

{ “if”: “true”, “limit_to”: “car_average_speed” },

],

“areas”: { “type”: “FeatureCollection”, “features”: }

}

Without the high multiplier it won’t route on the under-construction highway. With it, the travel time still is way to high. It’s many times slower than the current detour. The entirety of förbifart stockholm is supposed to take a bit over 15 mins but here, it takes 2 hours 7 minutes, Kungens kurva to Häggvik. The current roads take 28 minutes.

I tried adding this to the speed, because I thought that maybe the average speed is glitched because the road doesn’t exist yet, but it didn’t help.
“speed”: [

{ “if”: “true”, “limit_to”: “car_average_speed” },

{ “if”: “road_class == CONSTRUCTION”, “limit_to”: “max_speed” }

],

2

Did you try something like:

“speed”: [
  { “if”: “road_class == CONSTRUCTION”, “limit_to”: “100” },
  { “else”: “”, “limit_to”: “car_average_speed” }
]

? Your version limits the speed to ‘car_average_speed’ for all roads (construction will probably get something like 15km/h) first. The second statement doesn’t change this since “limit_to: max_speed” can only further decrease the speed.

1 Like
3

Yep this worked Thanks!