Comment Comment by m463 Safest roads have the speed limit 5-10 mph below the road design speed.see fig 4 on speed variance:https://www.fhwa.dot.gov/publications/research/safety/17098/...going faster or slower than average traffic speed shows markedly greater accident rate.note that this can apply not only to speed limits, but things like express lanes going different speeds than other lanes parent m463 2 years ago
see fig 4 on speed variance:
https://www.fhwa.dot.gov/publications/research/safety/17098/...
going faster or slower than average traffic speed shows markedly greater accident rate.
note that this can apply not only to speed limits, but things like express lanes going different speeds than other lanes