Abstract
Operators of parking guidance and information systems (PGIS) often encounter difficulty in determining when and how to provide reliable car park availability information to drivers. Reliability has become a key factor to ensure the benefits of urban PGIS. The present paper is the first to define the guiding parking reliability of urban parking variable message signs (VMSs). By analyzing the parking choice under guiding and optional parking lots, a guiding parking reliability model was constructed. A mathematical program was formulated to determine the guiding parking reliability of VMS. The procedures were applied to a numerical example, and the factors that affect guiding reliability were analyzed. The quantitative changes of the parking berths and the display conditions of VMS were found to be the most important factors influencing guiding reliability. The parking guiding VMS achieved the best benefit when the parking supply was close to or was less than the demand. The combination of a guiding parking reliability model and parking choice behavior offers potential for PGIS operators to reduce traffic congestion in central city areas.
Highlights
With the development and application of information transportation systems, urban Parking Guidance and Information System PGIS has become an important method to alleviate parking problems
To address the aforementioned issues, the present study focuses on the following: 1 defining Guiding Parking Reliability and related basic assumptions, 2 analyzing parking choice behavior and parking arrivals estimation, and establish a Guiding Parking Reliability model and algorithms, 3 analyzing factors influencing Guiding Parking Reliability using a numerical example network
In the condition of QAN 0 20 and QBN 0 90, the parking supply of parking lot B is close to the parking demand, so the optimized parking guiding information offers the highest parking reliability
Summary
With the development and application of information transportation systems, urban Parking Guidance and Information System PGIS has become an important method to alleviate parking problems. Studies have shown that optimizing the number and locations of VMS can efficiently guide the parking flow 3, 4 , through which the driving distance or the queue length can be minimized 5–7. Through this method, VMS reflects the operating condition of the parking lots and forecasts the parking berths. Li et al proposed the concept of parking reliability and quantitatively analyzed factors influencing guiding reliability They did not mention methods to dynamically estimate parking arrivals and to calculate the guiding reliability. Mei and Tian presented an optimized combination model and algorithm of parking guidance information configuration but did not consider the guiding reliability of VMS. 3 analyzing factors influencing Guiding Parking Reliability using a numerical example network
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