1 red rear fog light is always mandatory on the trailer itself, with no date condition. The law does contain a date nuance for older heavy trailers, but the exam follows the course material: treat the rear fog light as always mandatory.
Correct answer: 2 red rear lights; 1 red rear fog light; Plate lighting
Why learners get this wrong: Every trailer must have position lights at the front.
Correct answer: White goes at the front, the red triangles at the back
False — You put the red triangles at the front. The red triangular reflectors belong at the back and the white ones at the front, just like rear light and headlight.
Why learners get this wrong: The white retroreflectors of a trailer belong at the rear.
Correct answer: False
Why learners get this wrong: A trailer only needs a fog light if it was put into service after 31 December 1997.
Correct answer: Have it wired so the trailer lights up together with the car
False — You rely on the reflectors instead of the lights. Reflectors come on top of the required lights; the trailer's rear lights, brake lights and indicators must work, at the same time as the car's.
Why learners get this wrong: The trailer's lighting may burn independently of the towing car.
Correct answer: Marker lights — the trailer is longer than 6 metres
Why learners get this wrong: Extra marker lights are never needed, not even on a long trailer.