Engineering Factors Affecting Traffic Signal Yellow Time: Data Collection Manual

摘要

The manual includes step-by-step procedures recommended for collecting driver responses to the traffic signal change intervals (yellow plus all-red) using timelapse cameras. The desired data are identified together with the related data collection procedures. The data collection procedures include overall site layout consideration, equipment requirements, data collection forms, personnel requirements, and training aids. A recommended data reduction and analysis methodology is included. The manual is composed of the five basic steps to be conducted in a study of this type. A chapter is devoted to describing each of these tasks. Chapter 1 is written primarily for the study supervisor's information in preparing for the study. The remaining chapters provide information for both the study supervisor and field personnel.