Publication Detail

Data Collection for Driving Cycle Development: Evaluation of Data Collection Protocols


Research Report

Suggested Citation:
Niemeier, Debbie A., Thirayoot Limanond, Jennifer Morey (1999) Data Collection for Driving Cycle Development: Evaluation of Data Collection Protocols. Institute of Transportation Studies, University of California, Davis, Research Report UCD-ITS-RR-99-22

Significant efforts have been undertaken to collect data describing driving behavior in the United States for the purpose of constructing emissions cycles. Two primary methods have been employed to collect data: the use of a chase car to mimic driver behavior and record speed and acceleration data from sample vehicles, and the installation of onboard instrumentation in vehicles to record speed and acceleration data. New concepts are also being developed, for instance using global positioning satellite (GPS) technology to record vehicle movements on trips taken by a population of interest.

The purpose of the study was to evaluate the potential biases associated with the use of current chase car protocols as well as identifying and recommending solutions to problems in the actual data used to determine driving cycles. To evaluate potential biases in the chase car protocol, data collected in Los Angeles, CA in 1992 as well as chase car data from Baltimore, MD and Spokane, WA were examined. The chase car protocol itself was also investigated. Consideration was given to the relative advantages and disadvantages of instrumented vehicle and chase car data.

The current study has several objectives: 1) to review and evaluate the current chase car protocol; 2) to review and compare instrumented vehicle data to chase car data; 3) to evaluate GPS technology for use in future data collection procedures; and, 4) to recommend refinements to the existing chase car protocol. The object is to suggest adjustments to the current chase car protocol and to explore several possible new data collection methods.