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Guidebook for the California State Data Files. Volume 1. SAS File Formats. 4th Edition. Highway Information System
| 题名： | Guidebook for the California State Data Files. Volume 1. SAS File Formats. 4th Edition. Highway Information System |
| 关键词： | California; Traffic accidents; State highway departments; Information systems; Accident investigations; Motor vehicles; Accident factors; Accident causes; Vehicle occupancy; Traffic safety; Highway transportation; Safety measures; Traffic surveillance; Urban areas; Rural areas; Data collection; Data files |
| 摘要： | The California database incorporated into the Highway Safety Information System (HSIS) system is derived from the California TASAS (Traffic Accident Surveillance and Analysis System). The system, maintained by the Traffic Operations Office (TO) of CALTRANS, is a mainframe-based system based on COBOL programming. The TO Office provides the data to HSIS in the form of two different data files. These contain: Accident data (including accident, vehicle, and occupant data) and Roadway inventory data (including intersection and interchange ramp data, and Average Daily Traffic counts). The State agency responsible for statewide accident data collection is the California Highway Patrol (CHP). The CHP is responsible for investigating crashes on all freeways (urban and rural) and on other State routes and county roads outside municipal areas. It is also responsible for the collection and computerization of crash data from all investigating agencies in the State. The CHP investigates approximately two-thirds of all accidents occurring on State routes. The remainder are reported by municipal police. |
| 总页数： | 110p |
| 报告类型： | 科技报告 |
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