Publication Detail

Time Series Analysis of Above-Road Particulate Materials at Caldecott Tunnel

UCD-ITS-RR-99-17

Research Report

Suggested Citation:
Meng, Yu, Britt A. Holmen, Debbie A. Niemeier (1999) Time Series Analysis of Above-Road Particulate Materials at Caldecott Tunnel. Institute of Transportation Studies, University of California, Davis, Research Report UCD-ITS-RR-99-17

In this study, the above-road PM concentrations, together with in-use vehicle activity (the number of heavy-duty and light-duty vehicles) were collected at the Caldecott Tunnel in Orinda, California, on November 18, 1997. The data were analyzed using multivariate-lagged regression, which incorporates the auto-correlation of the dependent variable across time and the cross-correlation between the dependent variable and the explanatory variables across time. The results provide insights on the relative contributions of heavy-duty vehicles and light-duty vehicles to the above-road PM concentrations.