AV Service Coverage Mapping for Reachable Stopping Lanes
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Solution Overview
Problem
Autonomous vehicles (AVs) face challenges in determining and communicating their service area coverage due to dynamic road networks, road closures, and stopping restrictions, which can lead to reduced user satisfaction as they may not be able to reach intended destinations or stop at expected locations, affecting the perceived quality of service.
Innovation Solution
An AV system generates and maintains a detailed map database to determine service coverage areas by selecting lanes where AVs can stop, generating buffer regions, and combining them to create a coverage area, which can be updated in real-time based on observed changes in the road network, and provides this information to users through various visual formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AV system provides door-to-door service, then user satisfaction is improved, but the AV may be unable to reach the destination due to road closures or stopping restrictions
Solution Approach 1:
The system pre-calculates multiple alternative routes and identifies potential stopping locations before the trip begins. When road closures or stopping restrictions are detected, the system can quickly switch to pre-planned alternatives, maintaining service reliability without requiring real-time route recalculation
Solution Approach 2:
The route planning system dynamically adjusts the service approach based on real-time road conditions. If door-to-door service is blocked, the system automatically modifies the destination to the nearest accessible location and calculates the optimal combination of AV travel and pedestrian walking routes
2Loss of information
If the AV system communicates service limitations to users, then user expectations are managed, but users may perceive reduced quality of service
Solution Approach 1:
The system converts the limitation of unable-to-reach destinations into a benefit by automatically calculating and presenting alternative service options. Instead of simply saying 'we cannot reach your destination,' the system provides 'here are alternative locations we can reach, plus walking directions to your destination,' transforming a negative limitation into a positive solution
Solution Approach 2:
The system introduces pedestrian walking routes as an intermediary solution between the AV's stopping limitations and the user's door-to-door service expectation. The coverage area visualization acts as an intermediary tool that helps users understand and accept the service model
3Measurement precision
If the AV system maintains detailed map database with real-time updates, then service coverage accuracy is improved, but system complexity increases
Solution Approach 1:
The map database serves multiple functions: it stores geometric road network data for route planning, contains stopping restriction information for service boundary definition, and provides real-time update mechanisms for coverage area recalculation. This multi-functionality reduces the need for separate specialized systems
Data Source
AI summary
A map database stores data describing a set of connected roadways, each having one or more lanes. A coverage system selects lanes from the map database along which AVs can stop, such as parking lanes. The coverage system generates buffer regions for each of the stopping lanes, where each buffer region includes an area within a given distance of the respective lane. The coverage system combines the buffer regions to generate a coverage area, and provides a display of the coverage area overlayed over a map of roads corresponding to the coverage area.