Research Projects

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Research Projects

STATUS: In Progress YEAR: 2023 TOPIC AREA: Public transit, land use, and urban mobility CENTER: PSR

Practical Performance Indices to Enable Ranking of Signalized Corridors

Project Summary

Project number: PSR-23-07 TO 077
Funding source: Caltrans
Contract number: 65A0674
Funding amount: $100,000
Performance period: 1/1/2024 to 12/31/2024

Project description

Automated Traffic Signal Performance Measures (ATSPM)1 aim to provide comprehensive performance measures using traffic controller and vehicle data at different resolution levels. These measures however do not currently include consideration for fuel consumption or greenhouse gases. Moreover, the compartmentalization of measures in terms of input data at different resolutions and different types is too rigid to be applicable to a broad set of practical settings. We propose to rework indices on vehicle delay, pedestrian delay, greenhouse emissions, and fuel consumption for relatively low-resolution controller data and CAV data. These will be combined into a single score, which can then used for ranking of corridors. Specific objectives are: • Models which ingest data from stop bar/advanced loop detectors, pedestrian call logs, as well as connected vehicle data to estimate range of queue length profiles at intersections • Calibrate the proposed queue length estimation models in PTV VISSIM • Derive vehicle/pedestrian delay, emissions and fuel consumption from queue length • Comparison of performance indices under existing (if available) and optimized traffic signal plans • Combine multiple indices into a single score for corridor by utilizing user (Caltrans) preferences


Ketan Savla
Assistant Professor, Sonny Astani Department of Civil and Environmental Engineering; USC Viterbi School of Engineering
3620 South Vermont Avenue
Kaprielian Hall (KAP) 254ALos Angeles, CA 90089-2531
United States
[email protected]