Ahmed, A., Weaver, S., Chao, S. F., & Marchese, M. (2023). Evaluation of Additional Alternatives of, and Arrow Sizes for, Overhead Arrow-Per-Lane Guide Signs [techbrief] (Report No. FHWA-HRT-23-036). United States. Federal Highway Administration. Office of Research, Development, and Technology. https://rosap.ntl.bts.gov/view/dot/67028
Ahmed, Ananna, Starla Weaver, Szu-Fu Chao, and Matthew Marchese. Evaluation of Additional Alternatives of, and Arrow Sizes for, Overhead Arrow-Per-Lane Guide Signs [techbrief]. Report no. FHWA-HRT-23-036. United States. Federal Highway Administration. Office of Research, Development, and Technology, 2023. https://rosap.ntl.bts.gov/view/dot/67028.
Ahmed, Ananna, et al. Evaluation of Additional Alternatives of, and Arrow Sizes for, Overhead Arrow-Per-Lane Guide Signs [techbrief]. United States. Federal Highway Administration. Office of Research, Development, and Technology, 2023, Report no. FHWA-HRT-23-036, ROSA P. https://rosap.ntl.bts.gov/view/dot/67028.
This TechBrief discusses how complex interchanges with multiple exit lanes, including an option lane, can be confusing to navigate. Roadway signs provide navigational, lane assignment, and roadway geometry information that explain complex interchanges to drivers. Well-designed roadway signs help drivers make timely and accurate decisions. Signs that are confusing or that violate driver expectations may lead to unnecessary lane changes, sudden lane changes, and mistakes that may compromise roadway system efficiency and driver safety.
Ahmed, A., Weaver, S., Chao, S. F., & Marchese, M. (2023). Evaluation of Additional Alternatives of, and Arrow Sizes for, Overhead Arrow-Per-Lane Guide Signs [techbrief] (Report No. FHWA-HRT-23-036). United States. Federal Highway Administration. Office of Research, Development, and Technology. https://rosap.ntl.bts.gov/view/dot/67028
Ahmed, Ananna, Starla Weaver, Szu-Fu Chao, and Matthew Marchese. Evaluation of Additional Alternatives of, and Arrow Sizes for, Overhead Arrow-Per-Lane Guide Signs [techbrief]. Report no. FHWA-HRT-23-036. United States. Federal Highway Administration. Office of Research, Development, and Technology, 2023. https://rosap.ntl.bts.gov/view/dot/67028.
Ahmed, Ananna, et al. Evaluation of Additional Alternatives of, and Arrow Sizes for, Overhead Arrow-Per-Lane Guide Signs [techbrief]. United States. Federal Highway Administration. Office of Research, Development, and Technology, 2023, Report no. FHWA-HRT-23-036, ROSA P. https://rosap.ntl.bts.gov/view/dot/67028.
ROSA P serves as an archival repository of USDOT-published products including scientific
findings, journal articles, guidelines, recommendations, or other information authored or co-authored by
USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to
ensure public access to scientific information.
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