You are about to drive under a railway bridge. Your loaded vehicle is 4.1 metres high and the posted clearance is 4.2 metres. What should you do?

You are about to drive under a railway

Multiple choice — select the best answer

AProceed cautiously — the 100 mm clearance is sufficient
BFind an alternative route, because posted clearances include no tolerance and your load measurement may not be exact
CDrive through the centre of the arch where clearance is greatest
DSound your horn before entering so any oncoming traffic stops

✓ Correct answer: B. Find an alternative route, because posted clearances include no tolerance and your load measurement may not be exact DVSA guidance warns that posted bridge heights are nominal minimums and load heights measured at rest can increase due to road camber, suspension sag changes, or measurement error — a margin of only 100 mm is unsafe and an alternative route should be used.

.q-expl{display:block!important}.q-opt[data-idx="1"]{border-color:#16a34a;background:#f0fdf4}.q-opt[data-idx="1"] .oltr{background:#16a34a;color:#fff}.q-opt{cursor:default!important;pointer-events:none}

Keep practising. Use the free HGV Theory UK PDF, watch the YouTube walkthrough, or unlock all 10 web questions with timed mock exams.

Free PDF Video walkthrough

Topic: UK HGV/LGV/PCV Theory

← Previous Next → 🎲 Random question ↩ Back to all questions

Keep practising

You are about to drive under a railway bridge. Your loaded vehicle is 4.1 metres high and the posted clearance is 4.2 metres. What should you do?

Related questions — UK HGV/LGV/PCV Theory

Free practice here. Timed mocks when you are ready.