Great Britain Theory Test Coach
Rules of the roadQuestion 129 of 424

In slow-moving traffic, a side road joins on your left. What should you do?

  1. Block the junction to keep your place
  2. Sound your horn
  3. Close up to the car in front
  4. Leave a gap so that vehicles can get in and out
Show answer

Correct answer: Leave a gap so that vehicles can get in and out

Blocking side roads makes congestion worse.

Source: The Highway Code (Department for Transport, GOV.UK), General rules, techniques and advice for all drivers and riders (103 to 158), Rule 151

Practice rules of the road

Questions last reviewed: 18 October 2026