ADI Traffic Signs & Signals 2 — Questions and Answers
Question 1: What should a driver do when approaching a double white line where the line nearest to them is unbroken?
- Overtake if the road ahead is clear
- Not cross or straddle the line except in specific limited circumstances (Correct answer)
- Flash headlights and overtake quickly
- Use the right lane to overtake
Correct answer: Not cross or straddle the line except in specific limited circumstances
A solid white line nearest the driver means do not cross or straddle the centre line; exceptions include passing a stationary obstruction, cyclist, horse or road maintenance vehicle where safe.
Question 2: A flashing amber light at a pelican crossing means:
- Stop — pedestrians are crossing
- Give way to pedestrians still on the crossing before proceeding (Correct answer)
- Proceed as the crossing is clear
- Do not enter the crossing box
Correct answer: Give way to pedestrians still on the crossing before proceeding
The flashing amber phase at a pelican crossing follows red; drivers may proceed only when the crossing is clear of pedestrians, giving way to any still on the crossing.
Question 3: Which signal indicates 'stop' when given by a police officer controlling traffic?
- Officer faces you with arm raised and palm towards you (Correct answer)
- Officer has their back to you
- Officer faces sideways and points to the left
- Officer waves you forward
Correct answer: Officer faces you with arm raised and palm towards you
A police officer facing you with their right arm raised, palm outward, signals that you must stop; this is the legally enforceable 'stop' signal under the Road Traffic Act 1988.
Question 4: What does a yellow box junction marking prohibit?
- Parking within the yellow box
- Entering the box unless your exit is clear, except when turning right (Correct answer)
- Stopping within the yellow box for any reason
- Overtaking within the yellow box
Correct answer: Entering the box unless your exit is clear, except when turning right
The yellow box junction rules (s.36 RTA 1988 and Road Markings Regulations) prohibit entering the box unless the exit is clear; an exception allows waiting inside when turning right and blocked by oncoming traffic.
Question 5: A 'red route' stopping restriction (red lines) in London means:
- Parking restricted during certain hours only
- No stopping at any time during the hours indicated — even briefly (Correct answer)
- Loading only is permitted
- Only taxis may stop
Correct answer: No stopping at any time during the hours indicated — even briefly
Red routes prohibit stopping (not just parking) during the hours indicated by signs; double red lines mean no stopping at any time, more restrictive than yellow line restrictions.
Question 6: A sign showing a camera symbol on a motorway gantry alongside a speed limit means:
- There is a photo opportunity ahead
- Average speed cameras are in operation and the speed limit is enforced (Correct answer)
- CCTV is monitoring for congestion only
- Speed cameras are present but not currently active
Correct answer: Average speed cameras are in operation and the speed limit is enforced
Average speed cameras measure the time taken to travel between camera points; the speed displayed on the gantry is enforced for the full section, and drivers must maintain compliance throughout.
ADI Traffic Signs & Signals 2
What should a driver do when approaching a double white line where the line nearest to them is unbroken?