Experimental Car profiles for Brouter offline routing

Started by poutnikl, November 04, 2015, 08:34:00

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michaelbechtold

What is wrong with highway choice for cars. Highways are the most eco roads there are. The speed you choose makes the difference.

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Andrew Heard

We are probably going "off topic" with the direction of this topic, but as a highway motorist you are generally expected to drive at a fairly fast (read non-eco) speed. If you choose to drive at an "eco" speed (what speed would that be?) you will be a hazard to other faster moving vehicles on that highway.
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poutnikl

#17
Quote from: michaelbechtold on November 11, 2015, 08:17:47
What is wrong with highway choice for cars. Highways are the most eco roads there are. The speed you choose makes the difference.

Highways are very economic only in sense you avoid acceleration that spends a lot of fuel. But high speed is very non-economic. Regarding chosen speed, Eco profile does not count with speed for motorway 130 km/h.

Most economic is steady speed somewhere is interval 70-90 km/h - it is car dependent. But nobody would run at this speed on motorway ( unless perhaps saving Dutchmen, in early 90s they had motorway maxspeed 80 km/h )

The specific fuel consumption at 120-130 km/h is up to 1/3 higher then at 70-90 km/h.
For Fast profile is expected you run on motorways as fast as you can, i.e. e.g. 130 km/h . ( US guys would have to tweak the numbers for now ).
For Eco profile is expected you run slower at 110 km/h to save the fuel.

See also Brouter Car profiles Github wiki

poutnikl

#18
Quote from: Andrew Heard on November 11, 2015, 08:33:41
We are probably going "off topic" with the direction of this topic, but as a highway motorist you are generally expected to drive at a fairly fast (read non-eco) speed. If you choose to drive at an "eco" speed (what speed would that be?) you will be a hazard to other faster moving vehicles on that highway.

Why offtopic ?

Eco/EcoFast mode does not expect you to run at 70-90 car-dependent optimal eco speed, It takes 110 as trade off.
Cars going 150+ are higher hazard. Cars overtake each other on motorways all the time.

For EcoFast, I may consider to put there 120. Profiles are under development, anything can be changed.

But OSMAnd and later Graphhopper/Locus should be preferred.
OR GPX navigation.