Traffic flow simulator, simulation method of traffic flow, and computer program

A traffic flow simulator configured to simulate a traffic flow of a plurality of simulation vehicles generated in a road network, the traffic flow simulator comprising:

• a route selection unit configured to select a route for each of a plurality of the simulation vehicles in accordance with a predetermined route selection model;
• and
• an index calculation unit configured to calculate a traffic evaluation index of the road network by causing each of a plurality of the simulation vehicles to move on the road network in accordance with the route, wherein
• when a work mode designated by a user is a first mode below, the route selection unit records, into a storage unit, a first route being a route for each of the plurality of simulation vehicles in the first mode, and
• when a work mode designated by the user is an n-th mode below (n≥2), the route selection unit selects, as an n-th route being a route for each of the plurality of simulation vehicles in the n-th mode, the first route under a condition that an inequality below is not established or a second route under a condition that inequality below is established, and records the n-th route selected as such into the storage unit,
• the first mode being a work mode in which the traffic flow is simulated under a first setting condition,
• the n-th mode being a work mode in which the traffic flow is simulated under an n-th setting condition,
• C2+R<C1,
• where
• C1 is a cost of the first route calculated under a setting condition in the first mode,
• C2 is a cost of the second route calculated under a setting condition in the n-th mode, and
• R is an adherence rate to the first route.

A method for simulating a traffic flow of a plurality of simulation vehicles generated in a road network, the method comprising:

• a selection step of selecting a route for each of a plurality of the simulation vehicles in accordance with a predetermined route selection model;
• and
• a calculation step of calculating a traffic evaluation index of the road network by causing each of a plurality of the simulation vehicles to move on the road network in accordance with the route, wherein
• the selection step includes the steps of:
• when a work mode designated by a user is a first mode below, recording, into a storage unit, a first route being a route for each of the plurality of simulation vehicles in the first mode;
• and
• when a work mode designated by the user is an n-th mode below (n≥2), selecting, as an n-th route being a route for each of the plurality of simulation vehicles in the n-th mode, the first route under a condition that an inequality below is not established or a second route under a condition that the inequality below is established, and recording the n-th mode selected as such into the storage unit;
• the first mode being a work mode in which the traffic flow is simulated under a first setting condition,
• the n-th mode being a work mode in which the traffic flow is simulated under an n-th setting condition,
• C2+R<C1,
• where
• C1 is a cost of the first route calculated under a setting condition in the first mode,
• C2 is a cost of the second route calculated under a setting condition in the n-th mode, and
• R is an adherence rate to the first route.

A non-transitory computer readable storage medium storing a computer program configured to cause a computer to function as a traffic simulator, the traffic simulator being configured to simulate a traffic flow of a plurality of simulation vehicles generated in a road network,

• the computer program being configured to cause the computer to function as:
• a route selection unit configured to select a route for each of a plurality of the simulation vehicles in accordance with a predetermined route selection model;
• and
• an index calculation unit configured to calculate a traffic evaluation index of the road network by causing each of the simulation vehicles to move on the road network in accordance with the route, wherein
• when a work mode designated by a user is a first mode below, the route selection unit records, into a storage unit, a first route being a route for each of the plurality of simulation vehicles in the first mode, and
• when a work mode designated by the user is an n-th mode below (n≥2), the route selection unit selects, as an n-th route being a route for each of the plurality of simulation vehicles in the n-th mode, the first route under a condition that an inequality below is not established or a second route under a condition that inequality below is established, and records the n-th route selected as such into the storage unit,
• the first mode being a work mode in which the traffic flow is simulated under a first setting condition,
• the n-th mode being a work mode in which the traffic flow is simulated under an n-th setting condition,
• C2+R<C1,
• where
• C1 is a cost of the first route calculated under a setting condition in the first mode,
• C2 is a cost of the second route calculated under a setting condition in the n-th mode, and
• R is an adherence rate to the first route.