01366410

Component

This research investigates the possibility of using a sensor mounted on a vehicle to collect parking utilization data in parallel parking areas along arterial streets. There are many promising sensor technologies; Laser Detection and Ranging (LIDAR) is used in this pilot study. In this prototype system, the LIDAR scans 180 degrees in a vertical plane, orthogonal to the vehicle's direction of travel. In each scan the LIDAR sensor returns the distance to the nearest target at each angle. This paper discusses how these returns are then processed to estimate the location of the curb and the presence of objects in the road (i.e., on the near side of the curb). Occlusion reasoning and location reasoning are then applied to determine which of the objects are vehicles, which of those vehicles are parked, and where. The occupancy of the parking area, vehicle size, and vehicle-to-vehicle spacing are then measured. This automated vehicle presence detection promises to greatly reduce the labor of parking surveys, provide measures that were formerly cost prohibitive, and potentially do so in real time. The host vehicle could be a transit bus or another municipal vehicle performing ordinary duties, further reducing the data collection costs. The method was applied to an area with unmarked, on-street parking near the Ohio State University campus in Columbus, Ohio. Vehicle counts from five trips were compared against concurrent ground truth from video with favorable results. Results are then presented for 33 measurement trips made over four years.

This paper was sponsored by TRB committee ABJ50 Information Systems and Technology

01362476

12-2886

English

0000-0003-1332-1332

18p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Automatic data collection systems; Automatic vehicle detection and identification systems; Cost effectiveness; Laser radar; On street parking

Columbus (Ohio)

Data and Information Technology; Highways; I71: Traffic Theory

Transportation Research Board Annual Meeting 2012 Paper #12-2886

TRIS, TRB

Feb 8 2012 5:12PM