The yellow and red reflective tape outlining the sides and rear of modern trucks is not a branding decision. It is a legal requirement: regulation 20A of the Road Vehicles Lighting Regulations 1989, which applies the ECE conspicuity requirements to UK goods vehicles and trailers. For fleets it is a fitment duty, a maintenance item, and one of the more visible roadside checks a truck can fail.
The duty applies to goods vehicles that are:
motor vehicles first used on or after 10 July 2011, or
trailers manufactured on or after 10 July 2011
and which exceed the weight carve-outs: motor vehicles with a maximum gross weight over 7,500kg, and trailers with a maximum gross weight over 3,500kg. Vehicles at or under those weights are outside the mandatory requirement.
Those vehicles must be fitted with conspicuity markings that comply with the mandatory ECE conspicuity requirements - the contour markings that trace the vehicle’s outline in reflective material, making its full size readable to other drivers at night.
Three more exemptions sit inside the regulation: incomplete vehicles travelling to a works for completion or to storage or display for sale; and motor cars or heavy motor cars intended to form part of an articulated vehicle - the tractor unit itself, in other words, is not the vehicle the rule is aimed at; the combination’s body and trailer are where the markings belong.
Even a vehicle caught by the rule gets relief where it is small:
Where a vehicle escapes the mandatory marking through one of those size relaxations, it may still be fitted with markings complying with the optional ECE conspicuity requirements - voluntary, but permitted. And vehicles outside the mandatory scope entirely may generally fit optional-standard markings too, except passenger vehicles other than buses and trailers up to 750kg.
Fitment is the start, not the finish. Tape that was compliant at first registration stops being compliant when it peels, fades, gets pressure-washed off, or disappears under a repair panel. Conspicuity condition belongs on the walkaround check and the safety inspection sheet - a missing metre of side tape is both a regulation breach and a night-time visibility loss.
Body changes reset the question. A new body, a replacement rear door, a repaired side rail: each is an opportunity for the markings to come back wrong, partial or absent. Make “markings refitted and compliant” a sign-off item on body repairs, not an assumption.
Trailers move between operators. A hired or interchanged trailer carries its own duty. The trailer manufactured after July 2011 over 3.5 tonnes needs its markings whoever is pulling it, and the driver pulling it is the person who finds out at the roadside.
Know which vehicles are out of scope. The 7.5-tonne and 3.5-tonne thresholds, the 6-metre and 2.1-metre relaxations and the tractor-unit exemption mean a mixed fleet has mixed obligations. The compliance answer is per-vehicle, recorded in the vehicle file, not a blanket “all our trucks have tape”.
The purpose is brutally practical: a large vehicle at night, unlit or dimly lit, is a shape other drivers misread. The contour markings announce “this is a large object, this long, this wide” in headlights at distance. Collisions with the side or rear of trucks at night are exactly the accidents the markings prevent.
For enforcement, the attraction is simplicity. A missing or non-compliant marking is visible from across the road, needs no equipment to detect, and sits on the vehicle, not on someone’s say-so. As roadside findings go, it is one of the cheapest to make and one of the easiest for a fleet to have prevented.
Conspicuity is the rare regulation that is cheap to meet, easy to check and obviously worthwhile. There is no excuse for finding out about yours from an examiner.