The purpose of the study was to determine hazards in run-off-road accidents. The major data sources were accident data from specially trained state police, and road and roadside data from state files. Data were collected in six states; the sample consisted of almost 8,000 accidents on rural roads. The findings reflect (1) sample descriptors, (2) factors influencing the occurrence of run-off-road accidents, (3) the characteristics of road departures and factors influencing them, (4) off-road events and factors influencing them, including the effects of offset and clear zones, (5) impact behavior, speed, area of damage, and objects struck, (6) effects of impact characteristics on severity, and (7) effects of driver, road, maneuver, departure, and roadside characteristics on severity. In addition, there were a number of special studies including the role of impact characteristics in the relationships between severity and ditch depth, border offset, horizontal alignment, and degree of curvature. Also studied were guardrail and culvert impacts, extent of damage and injury relationships, and ADT versus accident rate. Finally, there is a discussion of countermeasures in terms of their classification, costs, needs, and current practice.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Hazardous Effects of Highway Features and Roadside Objects. Volume 1: Literature Review and Methodology


    Contributors:
    K. Perchonok (author) / T. A. Ranney (author) / A. S. Baum (author) / D. F. Morris (author) / J. D. Eppich (author)

    Publication date :

    1978


    Size :

    127 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






    Hazardous Effects of Highway Features and Roadside Objects. Volume 2: Findings

    K. Perchonok / T. A. Ranney / A. S. Baum et al. | NTIS | 1978



    Research on Highway Roadside Safety

    Guozhu Cheng / Rui Cheng / Yulong Pei et al. | DOAJ | 2021

    Free access