Under good driving conditions, you should leave at least one second of space between your vehicle and the vehicle ahead for every ___ feet of your vehicle's length.

Because sudden turns or steering adjustments can cause a large vehicle to tip over, and braking takes longer time and distance the bigger a load, you should keep a safe distance from other vehicles, give yourself at least 1 second for every 10 feet of your truck's length, and another second if you're travelling faster than 40 mph.