The federal test procedure for vehicle emissions measurement treats the first 505 sec of engine operation as the transient mode. Using this definition as the basis, a special technique was developed and used to trace the elapsed time of vehicles from trip origins during the traffic assignment of zone-to-zone trips on a highway network and to determine the proportions of transient and stabilized operating modes on every link of the network. The travel models of the Sacramento (California) urban area were used to apply this technique and derive operating mode fractions for this urban area. The data from the Nationwide Personal Transportation Survey were used to distinguish between cold transient and hot transient modes. The operating mode fractions were stratified by functional class of roadways and the location within the urban area. The time of day of travel also was used for further stratification. The results show wide variations in the operating mode fractions among the different categories of roadway, location, and time of day.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Operating Mode Fractions on Urban Roads Derived by Traffic Assignment


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    1996-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Operating Mode Fractions on Urban Roads Derived by Traffic Assignment

    Chatterjee, Arun / Reddy, P. / Venigalla, Mohan et al. | Transportation Research Record | 1996


    Operating Mode Fractions on Urban Roads Derived by Traffic Assignment

    Chatterjee, A. / Murali Reddy, P. / Venigalla, M. M. et al. | British Library Conference Proceedings | 1996


    Bottleneck identification and dynamic traffic assignment on toll roads

    Li, Xiangpeng / Zhang, Jiao / Wang, Jiaqi et al. | SPIE | 2025


    Operating Mode Fractions for the Sacramento Urban Area Highway Network

    A. Chatterjee / P. M. Reddy / M. M. Venigalla et al. | NTIS | 1995