James D. Colyar

HOT SPOT ANALYSIS OF REAL WORLD VEHICLE EMISSIONS BASED UPON A PORTABLE ON-BOARD MEASUREMENT SYSTEM

H. Christopher Frey, Nagui M. Rouphail, Alper Unal, 2001 .

Measured Distributions of Control Delay on Signalized Arterials

Nagui M. Rouphail, James D. Colyar, 2003 .

EMISSIONS REDUCTION THROUGH BETTER TRAFFIC MANAGEMENT: AN EMPIRICAL EVALUATION BASED UPON ON-ROAD MEASUREMENTS

Nagui M. Rouphail, H C Frey, Alper Unal, 2001 .

VEHICLE EMISSIONS AND TRAFFIC MEASURES: EXPLORATORY ANALYSIS OF FIELD OBSERVATIONS AT SIGNALIZED ARTERIALS

Nagui M. Rouphail, Alper Unal, Christopher Frey, 2001 .

Measurement of On-Road Tailpipe CO, NO, and Hydrocarbon Emissions Using a Portable Instrument

Nagui M. Rouphail, Alper Unal, James D. Colyar, 2001 .