**Tire chains** are essential tools for driving in snowy conditions. They are designed to improve the grip of the wheels on snowy roads, where tires have less traction and the vehicle needs more space to brake.

- **Use of chains:** The R-412 sign indicates the obligation to place chains on the driving wheels of the vehicle to continue driving in snow. This is crucial to maintain control of the vehicle and avoid dangerous skids.


- **Short trips:** Chains are more suitable for short trips. This is because their installation and removal can be complicated and they are not comfortable for long journeys. Additionally, prolonged use can damage both the chains and the tires.

- **Additional precautions:** When driving in snow, it is important to start with the wheels straight, avoid sudden movements, reduce speed gradually, and maintain a greater safety distance from other vehicles. These measures, along with the use of chains, help improve safety in winter conditions.

Therefore, chains are a temporary and practical solution to improve safety on short trips on snowy roads.