Drivers often confuse the functions of the V-2 signal and the V-16 beacon, two devices that emit yellow lights. However, the DGT emphasizes that each has a specific meaning and requires a distinct response from those on the road.

The V-2 signal is the rotating yellow light used by vehicles performing special work or services on the road. Its purpose is to alert other users to the presence of a vehicle that could pose an obstacle, urging them to reduce speed in that section. The General Traffic Regulations, in article 113, specify that this signal must be used by construction vehicles, service vehicles, agricultural machinery, special transports, or assistance vehicles on public roads.

This luminous device is activated when vehicles interrupt or obstruct traffic, or when they are working on cleaning, maintenance, signaling, or road repair operations, provided their presence could pose a danger. The V-2 signal must be visible in all directions from at least 100 meters, remain lit day and night, and be installed above the direction lights. Vehicles using it typically travel at less than 40 kilometers per hour or make frequent stops.

The main difference from the V-16 beacon lies in its function: while the V-2 identifies vehicles in service or in motion, the V-16 indicates that a vehicle is stopped due to a breakdown or accident. The DGT stresses that the V-2 signal cannot be installed on private vehicles unless they provide an authorized special service.

When observing a V-2 signal, drivers must exercise extreme caution, as it may indicate roadworks, stopped vehicles performing tasks, obstacles on the road, or slow traffic. It is recommended to reduce speed and maintain a safe distance. Conversely, upon detecting a V-16 beacon, drivers should act with moderation and caution, anticipating the possible presence of a broken-down or accident-involved vehicle to prevent further incidents.