3 ms·
The NHTSA treat 1.5 seconds as a typical reaction time, so seven car lengths is really rather marginal at 60mph. https://www.nhtsa.gov/nhtsa/Safety1nNum3ers/au
by jdietrich 8y ago
The NHTSA treat 1.5 seconds as a typical reaction time, so seven car lengths is really rather marginal at 60mph.
https://www.nhtsa.gov/nhtsa/Safety1nNum3ers/august2015/S1N_Speeding-August2015_812008.pdf https://www.nhtsa.gov/nhtsa/Safety1nNum3ers/august2015/S1N_S...
- mcguire 8y agoThe general advice I've heard from various safe-driving classes and state driving booklets is 2 seconds at any speed.
- CalChris 8y agoThis begs the question as to why Tesla doesn't have a setting for 8 car lengths. I thought it might be car length but the car length average seems to be 204 inches which is 1.35 seconds. In any case, this 7 car lengths is for TACC rather than human decision.