Without going into math from lowest to highest
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Sand 1
Red Desert 0
Shallow Water 2
Shallow Water
Grass
Dirt
Stone Path
Concrete
Refined Concrete
seems to make the most sense to me. That said from concrete to refined has no improvement on driving speed, similar to others. Shallow Water 2 I am ascertaining is deeper then Shallow Water and should actually result in a decrease of speed.
Also
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Wood Coal Solid Rocket Nuclear
100% 105% 110% 115% 120%
Wouldn't it make sense to have increased bonuses such as this to encourage use of certain materials over others.
Regarding the speeds being based off friction
https://wiki.factorio.com/Prototype/Veh ... tion_force
https://wiki.factorio.com/Concrete
https://wiki.factorio.com/Car
https://wiki.factorio.com/Tank
I don't see any hard numbers on the wiki of how they're generated. A lot of the terrain information doesn't seem to appear on the wiki. Or even clickable as a category from existing terrain pages.
Then you have the tank table of speeds which is completely different then the car table. Which makes sense tires vs tread. But the values for fuel types regardless of Rocket/Nuclear both showing as a 115% bonus in vanilla have different speeds according to the wiki whereas Wood/Coal both have a 100% bonus in vanilla show the same speed yield on the wiki.
Then you have refined concrete here the same as concrete same as the car, as mentioned of above which in my mind makes sense on a real life basis, however on an in game basis for incentive it makes no sense. The same as how walking speed is increased on refined concrete over concrete, so should driving speed imo.
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Tank Speeds
On grass, sand or dirt
Fuel Max velocity Reverse
Wood/coal 40.8km/h -28.9km/h
Solid fuel 44.8km/h -31.7km/h
Rocket fuel 54.8km/h -38.8km/h
Nuclear fuel 64.6km/h -45.7km/h
On stone brick
Fuel Max velocity Reverse
Wood/coal 43.6km/h -30.8km/h
Solid fuel 47.7km/h -33.8km/h
Rocket fuel 58.5km/h -41.4km/h
Nuclear fuel 68.9km/h -48.7km/h
On concrete, hazard concrete, refined concrete and refined hazard concrete
Fuel Max velocity Reverse
Wood/coal 44.9km/h -31.8km/h
Solid fuel 49.2km/h -34.8km/h
Rocket fuel 60.3km/h -42.6km/h
Nuclear fuel 71.8km/h -50.2km/h
There is also no reference to shallow water on the tank table. And the reference to Stone Path on the wiki for the car table is actually Stone Brick which shows correctly on the tank table.
