the driver's handbook

Parking at night or in poor visibility
If you leave your vehicle on the road at night or when visibility is poor, it
must have front and rear parking lights alight unless it is made clearly visible
from a distance of 200 metres by a lighted street light or other lamp.
If your vehicle is 2.2 metres wide or wider, you must always have the
clearance and side marker lights alight at night or in poor visibility.
Rear vision mirrors
Your vehicle must have a mirror or mirrors fitted so that you can have a
clear view of any vehicle approaching from behind. If, for any reason, your
view from an internally-fitted mirror is obscured, external mirrors must be
fitted that provide a clear view.
Panel vans and utilities must be fitted with two external rear vision mirrors.
At least one mirror must be fitted to each side of any vehicle when
towing a trailer that is wider than the towing vehicle. Motorcycles built
after (June 1975) must also have a rear vision mirror on each side.
Check list
Your vehicle needs to be fitted with:
• lights – headlights, tail lights, number plate light, parking lights
• horn
• mirrors – an internal rear view mirror, and if this does not offer
a clear view, side mounted rear view mirrors.
This equipment must be kept functional and clean.
The Driver’s Handbook 83