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    U.S. 75 North Central Expressway Reconstruction: Northwest Highway Screen Line Automobile and Transit User Panels. Initial Survey Results

    G. L. Ullman / R. A. Krammes | NTIS | 1990
    Verlag: Texas Transportation Inst., College Station

    U.S. 75 North Central Expressway Reconstruction: Northwest Highway Screen Line Automobile and Transit User Panels, May 1992 Survey Results

    G. L. Ullman / K. M. Collins / R. A. Krammes | NTIS | 1992
    Verlag: Texas Transportation Inst., College Station

    US-75 North Central Expressway Reconstruction: October 1994 and May 1995 Traffic Conditions and Survey Results

    S. E. Ranft / N. Trout / G. L. Ullman | NTIS | 1995
    Verlag: Texas Transportation Inst., College Station

    User's Manual for QUEWZ-92

    R. A. Krammes / G. L. Ullman / J. L. Memmott et al. | NTIS | 1993
    Verlag: Texas Transportation Inst., College Station

      User's Manual for QUEWZ-92

      R. A. Krammes / G. L. Ullman / J. L. Memmott et al. | NTIS | 1993
      Verlag: Texas Transportation Inst., College Station

    U.S. North Central Expressway Reconstruction: Northwest Highway Screen Line Automobile and Transit User Panels, May 1991 Survey Results

    G. L. Ullman / R. A. Krammes | NTIS | 1991
    Verlag: Texas Transportation Inst., College Station

    Visibility and Spacing of Lane Control Signals for Freeway Traffic Management

    G. L. Ullman / S. S. Tallamraju / N. D. Trout | NTIS | 1994
    Verlag: Texas Transportation Inst., College Station

    Visibility, Spacing, and Operation of Freeway Lane Control Signals

    G. L. Ullman / K. D. Parma / M. D. Peoples et al. | NTIS | 1996
    Verlag: Texas Transportation Inst., College Station

    Work Zone Crash Influences on Texas Roadways

    G. L. Ullman / S. D. Schrock / A. S. Cothron et al. | NTIS | 2005
    Verlag: Texas Transportation Inst., College Station

    Work Zone Lane Closure Warning Light System

    M. D. Finley / G. L. Ullman / C. L. Dudek | NTIS | 1999
    Verlag: Texas Transportation Inst., College Station

    Work Zone-Related Traffic Legislation: A Review of National Practices and Effectiveness

    G. L. Ullman / P. J. Carlson / N. D. Trout et al. | NTIS | 1997
    Verlag: Texas Transportation Inst., College Station

    Yellow Transition Lane Control Signal Symbols for Freeway Traffic Management

    G. L. Ullman / K. D. Parma / M. D. Peoples et al. | NTIS | 1996
    Verlag: Texas Transportation Inst., College Station