1–20 von 58 Ergebnissen
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    Analysis of Fatal Work Zone Crashes in Texas

    S. D. Schrock / G. L. Ullman / A. S. Cothron et al. | NTIS | 2004

    Assessing the Safety Impacts of Active Night Work Zones in Texas

    G. L. Ullman / M. D. Finley / B. R. Ullman | NTIS | 2004

    Benefits of Real-Time Travel Information in Houston, Texas

    K. N. Balke / G. L. Ullman / W. R. McCasland et al. | NTIS | 1995

    Delineation of Concrete Safety-Shaped Barriers

    G. L. Ullman / C. L. Dudek / C. J. Allen | NTIS | 1988

    Delineation of Concrete Safety-Shaped Barriers and Urban Freeway Gore Area Crash Cushions

    G. L. Ullman / C. L. Dudek / F. T. Creasey et al. | NTIS | 1988

    Delineation of Urban Freeway Gore Area Crash Cushions

    G. L. Ullman / F. T. Creasey / C. L. Dudek | NTIS | 1988

    Evaluating the Safety Risks of Active Night Work Zones

    G. L. Ullman / B. R. Ullman / M. D. Finley | NTIS | 2005

    Evaluation of Dynamic Speed Display Signs (DSDS)

    E. R. Roxe / G. L. Ullman | NTIS | 2003

    Flagger Safety and Alternatives to Manual Flagging

    G. L. Ullman / S. Z. Levine / S. C. Booker | NTIS | 1987

    Freeway Corridor Management

    C. L. Dudek / G. L. Ullman | NTIS | 1992

    Guidelines for Response to Major Freeway Incidents: Response Manual

    W. R. McCasland / M. A. Ogden / J. M. Mounce et al. | NTIS | 1994

    Identification of Traveler Information and Decision-Making Needs for Managed Lane Users

    S. D. Schrock / G. L. Ullman / A. A. Williams et al. | NTIS | 2004

    Investigating Pedestrian Components in Temporary Traffic Control

    B. R. Ullman / M. A. Brewer / K. Fitzpatrick et al. | NTIS | 2008