In 2012 the United States Congress issued a directive to the National Highway Traffic Safety Administration (NHTSA) to modernize its nationally representative crash databases and examine the data collected in those programs. In response, NHTSA initiated the Data Modernization Project to affirm its position as the leader in motor vehicle crash data collection and analysis, by collecting quality data to keep pace with emerging technology and evolving policy needs. To ensure the needs of the highway safety community were met NHTSA sought input from users of the data including government, academia, and industry. One of the areas the stakeholders requested upgrades was in the collection of more precise scene diagrams and vehicle measurements in the investigation-based programs. NHTSA’s new nationally representative study, the Crash Investigation Sampling System (CISS), will collect scene and vehicle measurements using total station mapping equipment. NHTSA elected to use FARO Technology software to produce scaled scene diagrams and will release files to the public which can be used by most computer-aided design (CAD) software. The purpose of this paper is to describe the CISS scene and vehicle measurement procedures and detail the improvements users of the data can expect in the coming years.