1. Manual vs Automated Parking ? A Technology Breakthrough
Traditional manual parking depends heavily on driver judgment, resulting in higher chances of scratches, collisions, and inconsistent parking quality.
With the introduction of the Parking Control Unit (PCU), automated parking features such as RSPA (Remote Smart Parking Assist) and APA (Auto Parking Assist) enable the vehicle to handle complex maneuvers independently.
Outcome:
- 65% reduction in low-speed parking collisions
- Consistent and optimized space usage
- Enhanced safety in tight parking environments
2. Importance of Ultrasonic Sensors (USS) & Radar in Parking
In early systems, USS alone was used to judge distance at low speeds. While effective, it had limitations in detecting angled obstacles or metallic reflections.
Integrating Short-Range Radar (SRR) allowed PCU to process a more robust perception model with:
- Better object detection in rain, fog, and low-light
- Accurate cross-traffic sensing
- Reliable distance estimation at higher parking speeds
Achievement:
Combined USS + Radar fusion increased detection reliability by over 40%, making automated parking smoother and safer.
3. Adding LiDAR ? A Future Step in Precision
Newer PCU architectures incorporate LiDAR for enhanced 3D mapping during parking. Unlike USS/Radar, LiDAR provides:
- High-resolution environment scanning includes Overhanging objects, Thin branches, Complex shapes which are generally above the car bumper area.
- Better detection of small, low-lying objects unlike USS and Radar
- Improved path planning in tight or cluttered spaces
Achievement:
LiDAR-enabled PCU prototypes demonstrated near-zero blind spots and superior path accuracy, marking a major step toward fully autonomous parking solutions.
Conclusion
This case study highlights how the evolution from manual parking to sensor-fused automated systems?powered by USS, Radar, and LiDAR?has transformed the Parking Control Unit into a high-precision, low-speed autonomy brain and intelligent vehicle automation.