Why does merging onto a highway require more planning in a combination vehicle than in a car?

Pick an answer

1. It only matters when merging onto a two-lane road
2. Merging rules are identical for all vehicle types with no extra planning needed at any speed
3. Combination vehicles accelerate faster than passenger cars
4. The combination accelerates more slowly, especially loaded, and needs a larger gap in traffic

Correct!

Not quite. The correct answer is highlighted.