North Carolina DMV Practice Test

Under normal conditions, what can increase the chances of an accident on an interstate highway?

1. Driving over the speed limit

2. Traveling considerably below the posted speed limit

3. Maintaining a steady speed

4. Using cruise control

The correct answer is: Traveling considerably below the posted speed limit

Traveling considerably below the posted speed limit can increase the chances of an accident on an interstate highway due to several factors. The primary issue is that most vehicles on the highway are likely moving at or near the speed limit. When a driver travels significantly below this speed, they create a disparity between their vehicle and the surrounding traffic. This can lead to unsafe conditions, as faster-moving vehicles may not anticipate the sudden deceleration needed to avoid an accident when they encounter a slower vehicle. Additionally, slower vehicles may inadvertently disrupt the flow of traffic, causing other drivers to make erratic maneuvers to avoid them. This disruption can lead to tailgating, sudden lane changes, or collisions, especially in high-speed environments like interstates where drivers expect a consistent speed with minimal interruptions. Maintaining the posted speed limit is essential for road safety on highways, as it ensures that all vehicles are traveling at a harmonious pace, reducing the likelihood of accidents caused by speed differentials.