Collier, T. (1986). Evaluation of selected warning signs at skewed railroad-highway crossings (Report No. VHTRC 86-R38). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19117
Collier, Todd. Evaluation of selected warning signs at skewed railroad-highway crossings. Report no. VHTRC 86-R38. Virginia Transportation Research Council (VTRC), 1986. https://rosap.ntl.bts.gov/view/dot/19117.
Collier, Todd Evaluation of selected warning signs at skewed railroad-highway crossings. Virginia Transportation Research Council (VTRC), 1986, Report no. VHTRC 86-R38, ROSA P. https://rosap.ntl.bts.gov/view/dot/19117.
A 1984 study by the Research Council recommended that advance warning signs be placed in advance of skewed railroad-highway grade crossings. Several signs were suggested for use, and the study reported here was undertaken to determine the effectiveness of two of these signs. The study focused upon how well cyclists observed and understood the signs. Questionnaires were distributed to motorcylists in the Harrisonburg area, and interviews were conducted with bicyclists encountered on the campus of James Madison University. Both of the suggested signs were found to be effective, but one was superior and its use is recommended
Collier, T. (1986). Evaluation of selected warning signs at skewed railroad-highway crossings (Report No. VHTRC 86-R38). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19117
Collier, Todd. Evaluation of selected warning signs at skewed railroad-highway crossings. Report no. VHTRC 86-R38. Virginia Transportation Research Council (VTRC), 1986. https://rosap.ntl.bts.gov/view/dot/19117.
Collier, Todd Evaluation of selected warning signs at skewed railroad-highway crossings. Virginia Transportation Research Council (VTRC), 1986, Report no. VHTRC 86-R38, ROSA P. https://rosap.ntl.bts.gov/view/dot/19117.
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