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Measurement and Evaluation of On-Road Vehicle
Emissions at Signalized Intersections
Principal
Investigator:
Dr. Lei Yu
Sponsoring Agency
Southwest Region University Transportation
Center,
SWUTC473700-00049
Period:
September 1, 2003 ~ August 31, 2004
Research
Abstract:
The most advanced
Portable Emission Measurement System (PEMS), the
real-world on-board emissions monitor – Montana
OEM2100, developed by the Clean Air
Technologies, Inc. (CATI), is capable of
measuring second-by-second mass emissions from
vehicles with electronically controlled sparked
ignition (SI) and compression ignition engines
during real-world, in-use operation. The device
is designed for a range of testing scenarios,
from short tests in the laboratory to extended
field-testing on fleet vehicles. The device
provides HC, CO, CO2, NOx
and O2 readings for gasoline-powered
vehicles and NOx, CO, CO2,
O2, PM readings for diesel vehicles.
This project collect real-world vehicle
emissions and activity data at selected
signalized intersections in Houston using PEMS,
analyze characteristics of the on-road vehicle
emissions at intersections, and develop a
microscopic emission model for application to
intersections. The data collected are combined
with existing traffic simulation models to
achieve a more accurate prediction of the air
quality impacts of various traffic control plans
and the intersection improvements.
The key
objectives of this project are to collect
real-world vehicle emissions and activity data
at selected signalized intersections in Houston
using PEMS, analyze characteristics of the
on-road vehicle emissions at intersections, and
develop a microscopic emission model for
application to intersections. The data collected
can be combined with existing traffic simulation
models to achieve more accurate predictions.
Research
Information
For further
information about the research, please contact
Dr. Lei Yu by telephone at
(713) 313-7282 or by e-mail at
yu_lx@tsu.edu.
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