FIG. 5 shows a flow chart of a communication method according to an embodiment of this disclosure. The communication method can be used in the street lamp integration device stated in some embodiments of this disclosure. As shown in FIG. 5, the communication method can comprise the following steps S501-S504.

Step S501: generating a local area network that covers a first range.

Step S502: connecting a vehicle in the first range to the local area network.

In some embodiments, the step S502 can connect the vehicle that enters into the first range to the local area network, or, connect the vehicle that enters the first range and meets the first condition (e.g., the speed of the vehicle is smaller than the speed threshold) to the local area network initiatively; or, connect the vehicle that meets the first condition to the local area network after the vehicle that enters the first range sends a request to be connected to the local area network.

Step S503: collecting traffic information in a second range.

Step S504: sending the traffic information to the vehicle connected to the local area network.

In some embodiments, the step S504 can send the traffic information to the vehicle that sends the request after the vehicle connected to the local area network sends a request to obtain the traffic information; or, can send the traffic information to the vehicle initiatively after the vehicle is connected to the local area network, or, can send the traffic information to all vehicles connected to the local area network after it is detected that the height of at least one vehicle in the first range is higher than the height threshold.