Abstract
The Georgia Institute of Technology School of Civil and Environmental Engineering has been developing speed-acceleration-road grade matrices for use in modal activity-based emissions models. These new modal emission rate models for heavy-duty transit buses predict emissions as a function of engine power demand for given transit bus activities, vehicle hours of travel, and baseline grams/brake-horsepower-hour emissions rates. Transit bus speed-acceleration-road grade matrices for use in modal activity-based transit bus engine power demand models, which can be directly used to estimate transit bus emissions rates, were developed. Speed-acceleration road grade matrices only for two aggregated roadway facility types without considering time of day and without considering route-specific infrastructure design characteristics were developed. However, more refined speed-acceleration-road grade matrices, speed and location data should be sub-classified for sub-roadway facility types and for the hour of day. This is an abstract of a paper presented at the 98th AWMA Annual Conference and Exhibition (Minneapolis, MN 6/21-24/2005).
| Original language | English |
|---|---|
| Journal | Proceedings of the Air and Waste Management Association's Annual Meeting and Exhibition |
| Volume | 2005 |
| State | Published - 2005 |
| Externally published | Yes |
| Event | Air and Waste Management Association's - 98th annual Conference and Exhibition - Minneapolis, MN, United States Duration: Jun 21 2005 → Jun 24 2005 |
Keywords
- And Speed-Acceleration-Road Grade Matrices
- Modal Emissions Modeling
- Transit Bus Engine Power Simulation
