Re:A proactive approach to e-scooter safety
by nl on Thursday February 06, 2020 @09:25PM
(#22262701)
I don't think any amount of effort justifies running red lights.
I think this calculation is basically right, but might be a bit worse for the average commuting cyclist. Many commuting bikes are heavy and badly maintained, so rolling resistance is likely to be a larger factor. Also at the low (max ~25km/h) speed of many commuting cyclist rolling resistance is almost as significant as air resistance. [1] indicates that up to around 17km/h it is as big a factor as drag, but that is on a well maintained bike.
I think this calculation is basically right, but might be a bit worse for the average commuting cyclist. Many commuting bikes are heavy and badly maintained, so rolling resistance is likely to be a larger factor. Also at the low (max ~25km/h) speed of many commuting cyclist rolling resistance is almost as significant as air resistance. [1] indicates that up to around 17km/h it is as big a factor as drag, but that is on a well maintained bike.
[1] https://www.gribble.org/cycling/power_v_speed.html