Author : E. Dean Landman
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (31 download)
Book Synopsis Evaluation of Longitudinal Construction Joints on Traffic Operations and Safety by : E. Dean Landman
Download or read book Evaluation of Longitudinal Construction Joints on Traffic Operations and Safety written by E. Dean Landman and published by . This book was released on 2009 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Motorists generally follow the guidance provided by pavement markings, which are normally marked in coincidence with the longitudinal construction joints, when the markings are necessary. At some locations, however, there may be a difference between joints and markings, which may lead the motorists to follow joints instead of pavement markings. In the absence of detailed research on this topic, an effort was made in this study to evaluate the effects of unmatched longitudinal construction joints and pavement markings on the lateral positioning of vehicles. Sites with such characteristics were identified, and detailed data were collected at selected sites, using video camera techniques to capture movements of vehicles for longer durations. The video tapes were later reduced to extract necessary information. Distance from the pavement edge to the centerline of each vehicle, vehicle type, presence of vehicles in the adjacent lane, traffic volume, weather conditions, and vehicle movement were the main data parameters gathered while reducing the data. In addition, two surveys were also conducted to gather the opinions of practitioners. Photographs of the vehicles traveling at several other locations, on the sections of the road which had mismatched joints and pavement markings were also taken. The data was analyzed to check for the impact of the non coincident pavement markings and longitudinal construction joints. A more rigorous statistical analysis was carried out for observations at one of the locations. Based on the survey and analysis of field data, drivers' lateral position seems to be affected by unmatched joints and pavement markings. It is advisable to make efforts to avoid such occurrences.
