A control method for a communication terminal comprising a communication part for selecting one of a first antenna and a second antenna and for being capable of communicating via a wireless connection with a base station connected to the first antenna and the second antenna, the first antenna being installed at a first location across a first road, the second antenna being installed at a second location across a second road intersecting the first road, the control method comprising:
- detecting a traffic flow on at least one of the first road and the second road;
- and
- selecting an antenna to be connected from the first antenna and the second antenna depending on the traffic flow.