**Speed limits** are established to ensure both **safety** and **fluidity** in vehicle traffic.

- **Safety**: Speed limits are designed to reduce the severity of accidents. For example, in urban areas, one must drive at less than 50 km/h to increase the chances of pedestrian survival in case of a collision. On roads and highways, limits are also adjusted to minimize the risk of serious accidents.

- **Fluidity**: By maintaining an appropriate speed within the limits, more comfortable and efficient circulation is facilitated. This means that vehicles can move more uniformly and predictably, reducing the likelihood of congestion and accidents.

- **Appropriate speed**: Driving at a speed that matches the weather conditions, the road, and the driver's state allows for better vehicle control in unforeseen circumstances, contributing to both traffic safety and fluidity.

In summary, speed limits not only aim to protect road users but also ensure that traffic flows efficiently and without unnecessary interruptions.