Traffic Sign Retroreflectivity - Part 1 скачать в хорошем качестве

Traffic Sign Retroreflectivity - Part 1

Traffic signs provide an important means of communicating information to road users. They need to be visible to be effective. The nighttime environment presents many sign visibility challenges. Since drivers cannot see as many visual cues as they can during the day, this places greater reliance on signs and other traffic control devices. To provide nighttime sign visibility, signs are made using retroreflective sheeting. Retroreflectivity is the property of a material that re-directs light back to the originating source. The 11th Edition of the national Manual on Uniform Traffic Control Devices (MUTCD) contains minimum maintained traffic sign retroreflectivity requirements, as does the current edition of the Ohio MUTCD. To comply with the requirements, public agencies need to implement and then continue to use an assessment or management method that is designed to maintain traffic sign retroreflectivity at or above the minimum levels specified. This 2-part webinar series video is intended for roadway agency personnel who are responsible for sign management, installation and maintenance, and who want to learn more about the assessment methods that can be used to comply with the MUTCD retroreflectivity requirements. Instructor – Ronald W. Eck, P.E. Ron is Professor Emeritus of Civil Engineering at West Virginia University and Director of the West Virginia Local Technical Assistance Program (WV LTAP). He has been involved in traffic engineering and roadway safety for over 40 years.