Safety Performance of Part-Time Shoulder Use on Freeways, Volume 2: Conduct of Research Report (2021) / Chapter Skim
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Pages 216-219
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218 C H A P T E R 9 - C O N C L U S I O N S Conclusions NCHRP Project 17-89 developed a safety prediction method for freeways that enables the evaluation of part-time shoulder use (PTSU)
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219 In addition to this final report, NCHRP Project 17-89 produced the following two documents PTSU Informational Guide PTSU Safety Evaluation Guidelines The PTSU Informational Guide presents an overview of PTSU in the United States, the results of PTSU operational studies, and the results of PTSU safety research. The PTSU Safety Evaluation Guidelines describe a safety prediction method for evaluating freeways with PTSU (or freeways where PTSU is being considered for implementation)
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220 fixed hours of operation. Some S-PTSU facilities have dynamic signs, and others have static signs.
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221 areas and used to estimate models for PTSU operation in rural areas, such as areas with seasonal or recreational-related congestion. Replace bi-directional freeway model in HSM with single-direction method.
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