Final answer:
Reflectors mounted on the rear and side nearest the rear of a vehicle must be red in color for visibility and safety regulations.
Step-by-step explanation:
The color of reflectors that must be mounted on the rear and on the side nearest the rear of a vehicle is red. This is for visibility and safety purposes, as red is the standard color used to indicate the rear of a vehicle and is designed to be highly visible to other road users in low light conditions.
Amber reflectors are generally used towards the front of a vehicle. The colors of reflectors are regulated to maintain consistency and ensure that vehicles are recognizable and their orientation is clear from a distance.
In the context of driver's education, all reflectors mounted on the rear and on the side nearest the rear must be red in color. This is an important safety requirement as it helps other drivers on the road to identify the position and orientation of the vehicle, especially during low visibility conditions such as at night or in poor weather.