traverse *_link roads at a significantly lower speed than the main link, fixes #1174

profiles/car.lua

@@ -13,15 +13,15 @@ restriction_exception_tags = { "motorcar", "motor_vehicle", "vehicle" }
 
 speed_profile = {
   ["motorway"] = 90,
-  ["motorway_link"] = 75,
+  ["motorway_link"] = 45,
   ["trunk"] = 85,
-  ["trunk_link"] = 70,
+  ["trunk_link"] = 40,
   ["primary"] = 65,
-  ["primary_link"] = 60,
+  ["primary_link"] = 30,
   ["secondary"] = 55,
-  ["secondary_link"] = 50,
+  ["secondary_link"] = 25,
   ["tertiary"] = 40,
-  ["tertiary_link"] = 30,
+  ["tertiary_link"] = 20,
   ["unclassified"] = 25,
   ["residential"] = 25,
   ["living_street"] = 10,