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Difficulty: MediumSpeed Control and Following Distance

When a passenger vehicle is carrying a full load of passengers and heavy cargo, a driver may safely maintain the standard three-second following distance because anti-lock braking systems (ABS) automatically compensate for the extra weight.

Answer: Answer

Answer

False
The correct answer is False because vehicle weight directly affects braking distance. Extra weight increases vehicle momentum, which increases the physical distance needed to stop. Anti-lock braking systems (ABS) help maintain steering control during emergency stops but cannot shorten the extra distance needed to bring a heavily loaded vehicle to a stop. Therefore, drivers should increase their following distance when carrying heavy loads.

Step-by-Step Solution

1
Analyze how increased vehicle mass affects stopping distance.
Carrying heavy cargo increases vehicle weight and momentum, requiring a longer distance to come to a complete stop.
Basic physics dictates that heavier objects require more force and distance to stop from a given speed.
2
Evaluate the function and limitations of Anti-lock Braking Systems (ABS).
ABS prevents wheels from locking up to maintain steering control, but it does not decrease the physical braking distance required for a heavier vehicle.
ABS assists with traction and vehicle stability during hard braking rather than shortening momentum-based stopping distances.
3
Determine the necessary safety adjustment for following distance.
The driver must expand the space cushion ahead of the vehicle by increasing the following distance beyond the standard three seconds.
An increased following distance provides the extra buffer space required for the longer stopping distance.

Key Concept

Impact of vehicle weight on stopping distance and safe space cushions
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Topics

Speed Control and Following Distance

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