Texas CDL General Knowledge Practice Exam

When approaching freeway exits, it is crucial for the safety of both the driver and other road users to reduce speed appropriately. Entering an exit at least 5 miles below the posted speed limit is recommended for heavy vehicles because they require a longer distance to stop and may have a harder time negotiating tight curves typically found at exits.

The rationale behind this recommendation is grounded in the control and stability of heavy vehicles, which can be adversely affected by abrupt changes in speed or direction. By reducing speed, drivers enhance their ability to navigate the exit safely and allow for any necessary adjustments to their driving, thereby minimizing the risk of accidents.

While the posted speed limit may apply to lighter vehicles, heavy vehicles have different handling characteristics that necessitate greater caution. Entering too quickly can lead to loss of control, especially if road conditions are poor or if the exit ramp features sharp turns. Therefore, adopting a speed at least 5 miles below the posted limit allows for a more controlled and safe maneuver off the freeway.