Someone is going to tow a trailer that’s wider than their car. What must they fit to their car before they start towing it?

Explanation: Exterior towing mirrors must be fitted a towing vehicle if
• the vehicle is narrower than the trailer or load
• the trailer or load obstructs the rearward view.

Category: Band 3 driving test, disabilities, law

References: The Official DVSA Guide to Driving: Section 19, Highway Code: Rule 98