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原文传递 Development of a Sensor Platform for Roadway Mapping: Part A - Road Centerline and Asset Management

题名：	Development of a Sensor Platform for Roadway Mapping: Part A - Road Centerline and Asset Management
作者：	Davis, B.; Donath, M.
关键词：	Driver support systems##Vehicle safety##Pavement management systems##Curbside safety##In vehicle sensors##Ran off road crashes##Crash analysis##Crash data##Digital maps##Asset management##Traffic surveillance##Monitoring##Laser radar##Mobile computing##Highway safety##Evaluation and assessment##Performance measurement##Needs assessment##Guardrails##Travel algorithms##
摘要：	Collecting information about the roadway infrastructure is a task that DOTs at all governmental levels need to accomplish. One way to increase the operational efficiency of these efforts is to use a relatively inexpensive mobile data collection platform that acquires information that is general enough to serve multiple purposes. The design and evaluation of one such platform that costs roughly $40,000 is described. It primarily consists of a differential GPS receiver providing vehicle location, and a LIDAR scanner that generates geometric profiles of the area between the vehicle and just beyond the road’s edge. The vehicle collects data along the road by driving it in both directions. The system post-processes the data to automate feature extraction. For roads with simple geometry such as two-lane, undivided highways, the road’s center-line can be calculated by finding the mid-line between the vehicle’s paths from each direction of travel. Algorithms process the LIDAR scans to automatically detect the presence of curbs and guardrails, which is then combined with location information to yield the position of these features in world coordinates. The center-line calculation was determined to be accurate to within 6 cm in areas where its use was applicable. Curbs and guardrails were generally detected with an accuracy of better than 10 cm. The results demonstrate that it is feasible to use a relatively inexpensive mobile data collection system to acquire road center-line and roadside features such as curbs and guardrails.
总页数：	61
报告类型：	科技报告