Seven Experiment Designs Addressing Problems of Safety and Capacity on Two-Lane Rural Highways : Volume 6. Experimental Design for Comparative Evaluation of Warning-Advisory and Regulatory Traffic Control Devices
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1978-05-01
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NTL Classification:NTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATION;NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLS;NTL-SAFETY AND SECURITY-SAFETY AND SECURITY;NTL-SAFETY AND SECURITY-Highway Safety;
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Abstract:The overuse of regulatory type signing on highways has been found to cause motorists to ignore all signing. In this experimental design, advisory-warning signs, regulatory signs and a combination of the two types will be tested in four experiments. The first experiment will compare curve signing; the second, intersection signing; the third, no passing zone signing; and fourth, signs for steep downgrades. A state-of-the-art survey and bibliography are included. A questionnaire for use in the no passing zone and downgrade experiments is appended.
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