Interstate and rural road driving

Key points

1. To merge into interstate traffic, you need a gap of four seconds.

   Source: Handbook p. 101

   “When you merge into traffic, you need a gap of four seconds.”
   Louisiana Class D and E Driver's Guide, Handbook p. 101

2. Stay in the right lane unless passing, exiting left or letting a vehicle enter.

   Source: Handbook p. 101

   “Stay in the right-hand lane unless overtaking and passing, making an exit to the left, or letting another vehicle enter.”
   Louisiana Class D and E Driver's Guide, Handbook p. 101

3. If you miss your exit, do not stop and do not back up. It is against the law.

   Source: Handbook p. 102

   “If you miss your exit, do not stop; do not back up! It is against the law and is one of the most dangerous things you can do on an interstate highway.”
   Louisiana Class D and E Driver's Guide, Handbook p. 102

4. On rural roads, slow down and move right before the crest of a hill or a curve.

   Source: Handbook p. 103

   “Before reaching the crest of a hill or before entering a curve, slow down, move to the right side of the road and watch for oncoming vehicles.”
   Louisiana Class D and E Driver's Guide, Handbook p. 103

5. An orange and red triangle means a vehicle is traveling less than 25 mph.

   Source: Handbook p. 105

   “means the vehicle is traveling less than 25 mph.”
   Louisiana Class D and E Driver's Guide, Handbook p. 105

6. Pass animal drawn vehicles with caution, without honking or revving your engine.

   Source: Handbook p. 106

   “Pass with caution and do not use your horn or "rev" the engine because this may scare the horse and cause a crash.”
   Louisiana Class D and E Driver's Guide, Handbook p. 106

7. If hitting a deer cannot be avoided, do not swerve. Keep your vehicle under control on the roadway.

   Source: Handbook p. 105

   “Do not swerve to avoid the animal; your risk of personal injury may be greater if you do. Keep your vehicle under control and on the roadway when you hit the animal.”
   Louisiana Class D and E Driver's Guide, Handbook p. 105

8. There are about 1.5 million deer vehicle collisions a year in the U.S.

   Source: Handbook p. 104

   “There were an estimated 1.5 million deer-vehicle collisions in annually in the United States”
   Louisiana Class D and E Driver's Guide, Handbook p. 104

Numbers to know

Recognize these signs

3 questions from the Louisiana practice test

1. 1. Why should a driver reduce speed before a curve or hill on a rural road?

   1. Rural hills and curves may be steeper and sharper than those on highways
   2. The posted limit becomes automatically invalid on every rural road
   3. A driver must stop at the crest of every hill
   4. Passing is always required before entering a curve
   Show answer

   Rural hills and curves may be steeper and sharper than those on highways. The manual warns that rural hills and curves can be steeper and sharper than those on highways. Lowering speed before reaching the crest or entering the bend gives the driver more time to see and react to hidden traffic, animals, or roadway changes. The posted limit does not become meaningless, but it is not a command to maintain that speed when the road demands less. Stopping at every hill is unnecessary and can create a hazard. Slow before the sightline disappears, not after an obstacle appears.

2. 2. How should a driver pass an animal-drawn vehicle on a rural road?

   1. Rev the engine loudly and pass as quickly as possible
   2. Sound the horn continuously so the animal moves away
   3. Pass cautiously without using the horn or revving the engine
   4. Drive onto the shoulder without checking the roadway
   Show answer

   Pass cautiously without using the horn or revving the engine. Animal-drawn vehicles have the same right to use the road as motor vehicles, but a horse can be frightened by sudden noise. The guide says to pass with caution and not use the horn or rev the engine, because startling the horse may cause a crash. A driver should reduce speed, leave ample room, watch for a left turn into a field or driveway, and pass only when the path is clear. The shoulder is not a substitute for checking traffic or maintaining a controlled, lawful position.

3. 3. A deer runs into the lane and a collision cannot be avoided. Which response does the Louisiana guide recommend?

   1. Leave the roadway onto the shoulder at full speed
   2. Turn sharply into oncoming traffic
   3. Keep the vehicle under control on the roadway instead of swerving
   4. Close your eyes and release the steering wheel
   Show answer

   Keep the vehicle under control on the roadway instead of swerving. When an animal collision is inevitable, the guide warns against swerving because leaving the roadway or entering opposing traffic can create a more serious crash. The driver should concentrate on keeping control and remaining on the roadway. The choice to turn sharply into oncoming traffic creates a second hazard that may injure other road users. Slow down when possible, keep your eyes on the intended path, and use controlled braking. The key cue is preserving vehicle control, even when avoiding the animal is no longer possible.

Source: the Louisiana Class D and E Driver's Guide, Chapter 7: Interstate Driving and Rural Roads. This lesson is a plain English summary, not the law itself; where it differs, the manual and the statute govern. Last checked 2026-09-27.