Retroreflectors

What is a retroreflector and how does it work?

Retroreflectors in vehicle lighting often use advanced materials such as glass or special plastics. These materials have been developed so that they can return light to the light source with high accuracy. The result? Significantly improved visibility and safety, especially in situations with limited light such as at night or in bad weather.

Different types of reflectors

There are different types of reflectors. When you think of colours, you quickly think of

1. White: Used for the front and sides of vehicles. They indicate the contours of the vehicle and increase visibility from the front and sides.
2. Red: Usually fitted at the rear of the vehicle. They indicate the rear of the vehicle and can also be used on trailers.
3. Orange (Amber): Often used for indicators and can also be on the side of the vehicle to indicate width.

When you think of shapes and their tasks, the most popular ones are:

Shapes

1. Rectangular / Square: This shape is commonly used to mark the rear and sides of vehicles, including trucks and trailers.
2. Round: These are often used as side reflectors and sometimes as additional rear reflectors.
3. Triangular: Mainly used to indicate that a vehicle is moving slowly. In some countries it is mandatory for certain types of vehicles, such as tractors.
4. Strip: This type can be fitted to the edges of a vehicle, such as a truck or trailer, to make its outline more visible.

Are retroreflectors compulsory?

In many European countries, retroreflectors are mandatory on certain types of vehicles. The specific requirements may vary depending on the type of vehicle, its size and its intended use. For example, there are generally stricter requirements for heavier and larger vehicles, such as trucks and buses, than for passenger cars. Generally speaking, red retroreflectors are required at the rear of the vehicle, and white or amber coloured ones at the front and on the sides.

These reflectors must comply with local and international regulations and often need to carry a specific certification mark to guarantee that they meet safety standards. In the European Union, for example, retroreflectors must comply with ECE regulations.