Project Assistant
Dr. Jeffery Wishart, Arizona State University
Embedded Files
Scenario Database Development: Create a repository of NHTSA pre-crash scenarios, annotated with fidelity, relevance, and complexity scores to align with regulatory guidelines.
Metric Standardization: Define and compute Driving Assessment (DA) metrics—such as Complexity, Relevance, Fidelity, Metric, and Severity—using the OSA methodology to provide consistent safety profiles across tests.
Scenario Definition: Script each pre-crash case (e.g., rear-end, lane change) in CARLA to position vehicles, pedestrians, and environmental elements according to NHTSA specifications.
Data Collection: Run multiple simulation iterations per scenario while logging vehicle states, sensor outputs, and event triggers (e.g., collision warnings) via CARLA’s logging interface.
Metric Computation: Calculate safety metrics—such as minimum clearance distance, collision incident counts, and response latency—using logged data and standardized formulas for safety assessment
Minimum Distance Safety Envelope (MDSE): Measures the closest distance maintained between the AV and other traffic participants during a scenario run.
Operational Electronic Device Response (OEDR) Time: Captures latency from hazard detection (e.g., sudden braking of lead vehicle) to initiation of AV’s corrective action.
Collision Incident (CI) Count: Records the number of collisions or near-miss events per scenario iteration.
Preliminary validation shows the framework can identify safety-critical behaviors—such as insufficient clearance or excessive response latency—and quantify performance degradations as scenario complexity increases. An external assessment tool demonstrated superior, fine-grained metrics compared to baseline simulator outputs, enabling actionable insights for AV developers. By reducing reliance on real-world testing by up to 97%, this methodology accelerates development cycles and enhances reproducibility in CAV safety validation. Please note that, having signed a non-disclosure agreement, I am unable to share further proprietary details about this project.
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