The air brake lag distance at 55 mph on dry pavement adds about 32 feet. So at 55 mph for an average driver under good traction and brake conditions, the total stopping distance is over 450 feet = Florida answer hand book
For an average driver traveling 55mph under good traction and brake conditions, total stopping distance using air brakes will have a stopping distance of: and the website answer More than 300 feet
Total stopping distance may compose perception time, reaction time braking time and lag time somewhere in there. I think that is where you get the four and a half seconds. I have noticed that the Texas handbook shows other answers than the studies presented here and it is best to study from your own states handbook. I have noticed that allot of states have different rules and regulations. I have been looking at the info in the Trucking Atlas I bought (Rand Mcnally) and it shows different regulations for different states.
I know must of the answers from here to my hand book are pretty much the same besides this one so i guess its a good study gudie for free i guess i cant get to bum hurt
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The air brake lag distance at 55 mph on dry pavement adds about 32 feet. So at 55 mph for an average driver under good traction and brake conditions, the total stopping distance is over 450 feet = Florida answer hand book
For an average driver traveling 55mph under good traction and brake conditions, total stopping distance using air brakes will have a stopping distance of: and the website answer More than 300 feet