Evaluating Accessibility to parking lots

A store owner in an area where public transportation network is not very developed wants to grasp his store’s site condition considering car access, because residents of such an area usually move by private car. In this situation, evaluating accessibility for parking lots must not be overlooked. In this article, we will show a simulation for evaluating accessibility to parking lots.

There are 7 Ome municipal parking lots and 6 private parking lots in this area. The following illustration represents mapping of these parking lots.

In the simulation, we presume that visitors of this area park their cars in the closest parking lot from the present place.

We set initial condition as follow.

(Step1) Each parking lot are stochastically set initial condition, occupied or vacant.

(Step2) In case of a parking lot that the visitor visit is vacant, the visitor park his car there and walk to the store by foot, otherwise the visitor go to the closet parking lot from the present parking lot. If next parking lot is also occupied, he go to the closet parking lot from the present parking lot……

(Step3) The visitor repeat Step2 till he can park his car.

(Step4) Simulation continue the Step1 to Step3 for 100 times in accordance with Monte Carlo simulation method.

Finally we calculate total time distance from start to arrival at a store (destination). We can regard this time as the accessibility of a certain store.

The following matrix is result of the simulation.

ランク店舗名時間時間距離(m)
1店舗12140111.25
2店舗6141112.737
3店舗7144115.16
4店舗8149121.085
5店舗13152124.935
6店舗14157130.117
7店舗924137.724
8店舗426139.792
9店舗529142.911
10店舗10216151.622
11店舗11240177.629
12店舗1532201.776
13店舗338208.467
14店舗2329232.436
15店舗16336240.162
16店舗17515349.884
17店舗1864404.072
18店舗20627430.111
19店舗21628431.635
20店舗19714481.917
21店舗11039710.163

Basically, the more closer a store is to parking lot, the more convenient it is, but we clarify that a store where located in closer place to parking lot does not always have  high accessibility.