Adaptive Cruise Control (ACC) is an advanced driver-assistance system (ADAS) that automatically adjusts a vehicle’s speed to maintain a safe following distance from the vehicle ahead. Unlike traditional cruise control, which maintains a set speed, ACC uses sensors such as radar, cameras, or LiDAR to monitor traffic conditions and adapt accordingly.
How it works
- Speed Setting: The driver sets a desired speed, similar to traditional cruise control.
- Distance Monitoring: ACC continuously monitors the distance to the vehicle ahead using sensors.
- Automatic Adjustments:
- Slowing Down: If a vehicle ahead slows or gets too close, the system reduces speed by cutting power to the engine or applying brakes.
- Speeding Up: When the road clears, the system accelerates back to the preset speed.
- Alerts: Some systems provide alerts if the driver needs to intervene.
Key Features
- Stop-and-Go Functionality: Advanced ACC systems can bring the car to a complete stop and resume automatically in heavy traffic.
- Integration with Other Systems: ACC often works in tandem with lane-keeping assist, collision avoidance, and traffic sign recognition for enhanced safety.
Benefits
- Improved Safety: Maintains safe following distances, reducing the risk of rear-end collisions.
- Reduced Driver Fatigue: Particularly useful in highway driving or stop-and-go traffic.
- Fuel Efficiency: Smooth acceleration and deceleration can improve fuel economy.
Limitations
- Weather Dependency: Performance can be affected by poor visibility or adverse weather conditions.
- Sensor Limitations: May not recognize stationary objects or complex traffic situations.
With real-time measurement of parameters from up to four vehicles and at better than 2 cm positional accuracy, the testing system allows manufacturers to easily verify the effectiveness of their Adaptive Cruise Control system.