Quote:
Originally Posted by redpoint5
Drafting a lorry seems relatively safe to me. While you cannot come to a stop within 100ft of distance, neither can the truck unless he hit a concrete wall. All of my vehicles can stop much, much quicker than a semi. Besides that, they only travel 60mph tops where I'm at. This isn't nearly as dangerous as those that tailgate doing 85 in the fast lane.
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My car will stop in just over 100ft at 60mph. On the factory (crap) tires. My other car is much worse at 189 ft from 70 on factory (crap) tires and factory (crap) brake pads. I'd put it close to 130ft now. A semi braking distance from 65mph is over 400 feet.
http://utahmc.com/trucksmart/trucksm...-factsheet.pdf
Additionally, on a semi there is a delay between when the brake lights come on and the brakes are actually applied. Air brakes have a significant lag (you can read the limits of it in the FMVSS standards).