Which of the following blocks the smooth flow of traffic?
- Slowing down to look at collision scene. ✓
- Avoiding unnecessary lane changes.
- Using public transportation instead of your vehicle.
Answer: A. Slowing down to look at collision scene.
Slowing down to look at a collision scene blocks the smooth flow of traffic.
Why this is the answer
The handbook lists a vehicle traveling faster or slower than the flow of traffic as a common cause of collisions, and it says to avoid driving near collisions. It also notes that if people are hurt, they get help faster when other vehicles are not blocking the road. Slowing down just to look at a crash makes you move below the flow of traffic and can hold up the vehicles behind you, so that choice blocks smooth traffic.
Why the other answers are wrong
- B. Avoiding unnecessary lane changes. — Avoiding unnecessary lane changes helps traffic move smoothly; the handbook says to stay in one lane as much as possible and not weave in and out.
- C. Using public transportation instead of your vehicle. — Using public transportation instead of your vehicle is not described in the passages as something that blocks the smooth flow of traffic.
Remember it
Look at the road ahead, not the crash, and keep your pace with traffic.