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D tour at motorway junction over motorway_link, wrong, time/speed calculation problem?

Open AllroadsNL opened this issue 5 years ago • 4 comments

Situation link OSM site Situation link OSRM site

Image situation:

Dtour motorway junction

Espected: That the motorway was taken straight on.

Failure: The D tour is taken over the motorway_link.

Data is changed recently because of Government maxspeed rules on motorway. (nation wide) motorway: maxspeed=100 maxspeed:conditional=130 @ (19:00-06:00)

But on the motorway_link to the motorway situation streetview there is this G01 trafficsign

NLG01

This means from that point, rules says you can drive 130. And Government did not adjust that, Once directly on the motorway, we get mostly a trafficsign with maxspeed=100 maxspeed:conditional=130 @ (19:00-06:00), because there is a other junction comming up, in this case, there is only a maxspeed=100 sign. Stituation streetview.

Maybe for this type of situations, with a motorway_link. where the maxspeed is higher as the motorway, where a D tour is visualised wrongly a other time/speed calculation should be used?

There is also highway=give_way on the exit motorway_link, that does not have the effect as it should have. To better calculate the time/speed ratio?

General: At a give_way, people come mostly to a stop, so this effect the time/speed ratio. At a entrance motorway_link, people have to accelarate mostly, this should effect the time/speed ratio.

Or is the program struggling with the conditional settings?

Dtour motorway junctionJOSM

The data in OSM is correct, a situation, that now is common in the Netherlands. The Government, says, because of the entrence of a motorway, people mostly drive/ride not that 130 maxspeed, must accelerate, because it is a entrance. More trafficsigns, does not make the road safer. After a couple of hunderd meters they get the new maxspeed sign. It is a consideration of more trafficsigns, costs and safety risks.

AllroadsNL avatar Jul 06 '20 15:07 AllroadsNL