**Navigation systems** can help control the vehicle's speed, but it is important to remember that the **main source of information** should always be the **speedometer**.

- **Cruise control**: This system allows you to maintain a constant speed without needing to use the pedals. It is activated from the steering wheel and deactivated when accelerating or braking. This helps control speed more comfortably.

- **Traffic Sign Recognition (TSR) system**: It detects speed limit signs on the road. Some vehicles display the maximum allowed speed on the instrument panel, while others can even automatically reduce speed if the limit is exceeded.


- **Adaptive cruise control**: In addition to maintaining speed, this system helps keep a safe distance from the vehicle in front, adjusting speed or braking if necessary.

These systems are useful, but attention should always be paid to the speedometer to ensure you are driving at a safe and appropriate speed.