Understanding Average Speed

otbutz · March 25, 2025, 2:48pm

These are only the fallback values. If a maxspeed tag is present, the average speed is assumed to be 90% of that limit:

core/src/main/java/com/graphhopper/routing/util/parsers/CarAverageSpeedParser.java

102a58dc1


      
          protected double applyMaxSpeed(ReaderWay way, double speed, boolean bwd) {
              double maxSpeed = OSMMaxSpeedParser.parseMaxSpeed(way, bwd);
              return maxSpeed != MaxSpeed.MAXSPEED_MISSING ? Math.max(1, maxSpeed * 0.9) : speed;