Tennessee Permit Practice Test

When entering an interstate highway, you should:

1. Stop, check for cars and enter when safe.

2. Check for cars, reduce speed to 25 MPH before entering traffic lane.

3. Check for cars, increase your speed to match the flow of traffic and merge when the way is clear.

4. Speeds up to 30 m.p.h.

The correct answer is: Check for cars, increase your speed to match the flow of traffic and merge when the way is clear.

When entering an interstate highway, it is essential to check for cars, increase your speed to match the flow of traffic, and merge when the way is clear. This is the correct procedure because highways typically have high-speed traffic, and merging at a speed that matches the flow of traffic helps to maintain a safe and efficient traffic flow. It is important to merge smoothly and safely into the traffic without disrupting the speed of other vehicles on the highway. This option aligns with best practices for entering a highway safely. The other options are incorrect because stopping on the entrance ramp or reducing speed significantly before entering the highway can be dangerous and disrupt the flow of traffic. Speeding up to only 30 mph is insufficient for merging onto most interstate highways where the speed of traffic is typically much faster.