Submitted by T L on Thu, 2020-01-16 06:00
Reference: Page 81 of Model 3 Owner's manual
I'm hoping to better understand the follow distance feature of TACC. According to the manual, each number/setting "corresponds to a time-based distance that represents how long it takes for Model 3, from its current location, to reach the location of the rear bumper of the vehicle ahead of you". In normal driving highway driving situations (i.e 60mph +), time is essentially equivalent to distance since 1 second is roughly equal to 1 car length (dependent on speed). However, in a bumper-to-bumper congested traffic situation, even setting the number to "7" does not leave an adequate amount of space with the car in front to allow other cars to merge without my car coming to a complete stop.