Vehicle Risk Region Control for Sidewalk-Aware Pedestrian Avoidance

The patent applies parameter changes by dynamically adjusting the risk region size based on sidewalk width and roadway width parameters. When sidewalk width is large or roadway width is large, the risk region is reduced. When sidewalk width is small or roadway width is small, the risk region is increased. This allows the system to adapt risk assessment to different road environments without requiring a completely complex decision framework.

The patent implements local quality by setting different risk region sizes for different spatial locations and environmental conditions. Instead of a uniform risk region for all pedestrians, the system locally adjusts the risk region based on the specific sidewalk and roadway widths at each location, making the risk assessment appropriate for each local context.

The patent applies dynamics by making the vehicle's distance from pedestrians dynamic rather than fixed. The controlled distance varies based on real-time environmental parameters (sidewalk width, roadway width) and pedestrian characteristics. This allows the vehicle to maintain appropriate safety distances that adapt to current conditions, avoiding excessive caution in safe environments while ensuring adequate safety in high-risk environments.

The patent implements preliminary action by pre-establishing risk region parameters based on environmental characteristics before vehicle-pedestrian interactions occur. The system calculates appropriate risk regions based on sidewalk and roadway widths in advance, allowing the vehicle to proactively adjust its behavior rather than reacting excessively to each pedestrian encounter.