Virtual vapor trail alerts about slow-moving vehicles

A method of alerting a second vehicle about a first vehicle in front of the second vehicle, the method comprising:

• broadcasting a first request for speed information as a first Bluetooth Low Energy (BLE) signal, wherein the first request includes a universally unique identifier (UUID) associated with BLE and associated with a service of the traffic monitor, and then receiving a first response from the first vehicle in response to the first request, wherein the first response contains data that indicates that the first vehicle is moving at a first speed;
• comparing the first speed to a threshold speed to determine that the first speed is less than the threshold speed, and determining, based on the first speed, a first time period for alerting other vehicles about the first vehicle;
• and
• alerting the second vehicle during the first time period about the first vehicle in response to the first speed being less than the threshold speed.

A non-transitory, computer-readable medium comprising instructions that are executable in a traffic monitor, wherein the instructions when executed cause the traffic monitor to carry out a method of alerting a second vehicle about a first vehicle in front of the second vehicle, and wherein the method comprises:

• broadcasting a first request for speed information as a first Bluetooth Low Energy (BLE) signal, the first request including a universally unique identifier (UUID) associated with BLE and associated with a service of the traffic monitor, and then receiving a first response from the first vehicle in response to the first request, the first response containing data that indicates that the first vehicle is moving at a first speed;
• comparing the first speed to a threshold speed to determine that the first speed is less than the threshold speed, and determining, based on the first speed, a first time period for alerting other vehicles about the first vehicle;
• and
• alerting the second vehicle during the first time period about the first vehicle in response to the first speed being less than the threshold speed.