The goal of this report is to document the process and procedures used by LTPP to collect and store the traffic data used to estimate pavement loadings. This first section of this report provides introductory material on the traffic data collection process, including an outline of how data flows through the system and an introduction to terms used throughout this report. Section 2 covers the principles of traffic data collection regarding data manipulation, site-specific data, and codes for data availability and site location. The traffic data collection plan is presented in Section 3. Section 4 presents LTPP’s instructions for the selection, location, installation and calibration of traffic data collection equipment. Section 5 details the submittal formats for traffic monitoring data. Section 6 presents the forms and instructions for submitting monitored traffic data. Appendix A discusses the submittal of historical traffic
data.