When driving a 40-foot vehicle at 35 mph, what is the least amount of space you should keep behind the vehicle in front of you?

When driving a 40-foot vehicle at 35 mph, what is the least amount of space you should keep behind the vehicle in front of you?

• A. 3 seconds
• B. 4 seconds
• C. 5 seconds
• D. 6 seconds

Answer: (B)

Maintaining a safe following distance is about giving yourself enough time to react and stop. For a large vehicle at speeds around 35 mph, four seconds is the recommended minimum gap under normal conditions. That four-second cushion translates to roughly 205 feet of space behind the lead vehicle, giving you time to perceive a hazard, react, and brake without a crash. The length of your 40-foot truck contributes to the overall stopping distance, and you don’t need to add extra seconds unless conditions deteriorate. If roads are wet, slick, or visibility is poor, increase the gap to five seconds or more. Three seconds is too little for a big vehicle at this speed, while five or six seconds would be safer but not the least space under normal conditions.

Maintaining a safe following distance is about giving yourself enough time to react and stop. For a large vehicle at speeds around 35 mph, four seconds is the recommended minimum gap under normal conditions. That four-second cushion translates to roughly 205 feet of space behind the lead vehicle, giving you time to perceive a hazard, react, and brake without a crash. The length of your 40-foot truck contributes to the overall stopping distance, and you don’t need to add extra seconds unless conditions deteriorate. If roads are wet, slick, or visibility is poor, increase the gap to five seconds or more. Three seconds is too little for a big vehicle at this speed, while five or six seconds would be safer but not the least space under normal conditions.