3 Influential Factors on Number of Shared Parking Transactions Based on the regression results, implemented duration of shared parking, parking lot capacity, land-use type, number of business office buildings, art-related POIs, and bus stations (within 750 meters) have a statistically significant impact on the number of transactions. In particular, the mean of number of transactions increases by 5.3%, with each additional month of shared parking implementation in the parking lot, which could be explained by higher user awareness and better services based on operation experiences. As for parking capacity, with each increase of 10 parking lots, the mean of number of transactions increases by 0.1%. Also, compared with mixed land-use shared parking, commercial shared parking has 67.8% fewer transactions, and residential shared parking has 43.9% fewer transactions. Regarding the influence of POIs, one more business office building within 750 meters increases the mean of number of transactions by 3.1%, while one more artrelated building, which is supposed to be less often visited in China and equipped with sufficient parking space, decreases transactions by 10.7%. Besides, with one more bus station located within 750 meters, the mean of number of total transactions decreases by 9.4%, which can probably be explained by the assumption that bus services can reduce car usage. Influential Factors on Average Shared Parking Duration Based on the regression results, land-use type, number of business office buildings, number of hospitals, and peak time have a statistically significant effect on average parking duration. In particular, the public shared parking lots have the longest average parking duration, followed by residential parking lots, business office parking lots, mixed parking lots, and commercial parking lots. Regarding the surrounding POIs’ influence, one more business office building within walking distance decreases the mean parking duration by 0.032 hours, while one more hospital nearby decreases the mean parking duration by 0.187 hours. Moreover, the peak hours of shared parking lots have an impact on parking duration. The mean parking duration of parking lots with peak hours between 10-12 am on weekends, is 0.858 hours shorter than average, while that of parking lots with peak hours between 18-20 pm on weekends is 1.488 hours longer than average, which might be associated with users’ parking purposes at different times of the day. Transaction number at different hour of a day (left) and ratio of parking duration (right) Figure 2 Residential shared parking lots Mixed shared parking lots Office shared parking lots Commercial shared parking lots Public shared parking lots Total number of transactions of shared parking lots in the city (left) and central districts (right) Figure 1d Public Policy BULLETIN Factors Influencing Shared Parking Use in Time and Space: A Case Study in Guangzhou
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