Base station, traffic communication system, and traffic communication method

A base station installed around a road, the base station comprising:

• a controller configured to acquire weather condition information indicating a weather condition on the road, and to estimate a risk level of occurrence of a traffic accident on the road based on the weather condition information;
• and
• a communicator configured to transmit, to a vehicle on the road, a warning message including information based on the risk level estimated, wherein
• the weather condition information includes insolation direction information indicating a direction of insolation to the vehicle on the road,
• the controller is configured to estimate the risk level based on the insolation direction information,
• the communicator is configured to receive a notification message from the vehicle on the road, and
• the controller is configured to
• estimate a first risk level as the risk level in a case where a movement direction of the vehicle on the road identified based on the notification message and the direction of insolation are not opposite to each other, and
• estimate, as the risk level, a second risk level higher than the first risk level in a case where the movement direction and the direction of insolation are opposite to each other.

A base station installed around a road, the base station comprising:

• a controller configured to acquire weather condition information indicating a weather condition on the road, and to estimate a risk level of occurrence of a traffic accident on the road based on the weather condition information;
• a communicator configured to transmit, to a vehicle on the road, a warning message including information based on the risk level estimated;
• and
• an interface connected to a plurality of sensors for sensing a mobile body on the road, wherein
• the plurality of sensors includes an infrared camera, and
• the controller is configured to
• select the infrared camera among the plurality of sensors based on the weather condition information, and
• to estimate the risk level further based on a captured image obtained by the infrared camera.

A traffic communication method used in a base station installed around a road, the traffic communication method comprising:

• acquiring weather condition information indicating a weather condition on the road;
• estimating a risk level of occurrence of a traffic accident on the road based on the weather condition information;
• and
• transmitting, to a vehicle on the road, a warning message including information based on the risk level estimated, wherein
• the weather condition information includes insolation direction information indicating a direction of insolation to the vehicle on the road, and
• estimating the risk level based on the insolation direction information.