What color should the rear reflex reflectors be?

The rear reflex reflectors on a vehicle are required to be red. This specific color is mandated by safety regulations to enhance visibility and indicate the presence of a vehicle from a distance, especially at night or in low-light conditions. The red color serves as a visual cue to other drivers and pedestrians, alerting them to the location and outline of the vehicle, which is crucial for preventing accidents.

In terms of other colors, while amber reflectors are typically used on the front sides of vehicles or on turn signals, white is often associated with the front of vehicles, and blue is generally used for emergency vehicles. These distinctions in color help convey specific information to other road users, and having red reflectors at the rear reinforces consistent safety standards across different types of vehicles.