Modeling Vehicular CO Emissions for Time Headway-based Environmental Traffic Management System

This paper reveals the relationship between vehicles time headway and Carbon monoxide emission factors. Traffic characteristics field measurements were conducted on road link at the entrance of New Borg El-Arab City-Egypt. Distribution of time headways for Passenger cars and Heavy vehicle were investigated. The instantaneous vehicular emission model (VT-Micro) was utilized to calculate CO emission factors of individual vehicles in different traffic situation. Real-time emission models were developed using vehicles time headway as explanatory variable. Models introduce good fit having R2 of about 0.9 and low RMSE. Components for an intelligent traffic management system (ITMS) for controlling emissions were proposed.