Define “slow moving vehicle”:

1. A motor vehicle having a prescribed maximal speed of 50 k.p.h.
2. A motor vehicle having a prescribed maximal speed of no less than 50 k.p.h.
3. Correct answer: A vehicle restricted by law to 40 k.p.h. or less
4. A motor vehicle having a prescribed maximal speed of 55 k.p.h.

WhyA slow vehicle is a motor vehicle that by its specification cannot go faster than 40 km/h. The numbers 50 and 55 are there to confuse you.