Approach to Development and Evaluation of Driving Cycles for Classified Roads Based on Vehicle Emission Characteristics

The first objective of this study is to develop driving cycles for classified roads incorporating a vehicle's driving activities as well as emission characteristics by using the data collected by a portable emission measurement system, which was not available or has never been used in developing driving cycles. The second objective is to develop an approach to evaluate driving cycles in which the vehicle specific power, a parameter that can readily connect the driving modes with emissions, is used to evaluate how well the driving cycles can represent the driving and emission characteristics on real roads. A comparison is conducted of driving cycles developed by the proposed method versus the traditional methodology. Results show that driving cycles developed by the proposed method can better represent the emission characteristics of on-road vehicles.