Proximity event determination with lane change information

1. A system for determining proximity events, comprising:

an input interface to receive a lane change information, wherein the lane change information includes sensor-collected data of behavior of a vehicle relative to at least one lane; and

a processor to:

determine a proximity event based at least in part on a distance between the vehicle and a nearby vehicle being below a threshold distance for a threshold duration;

determine whether to cancel the proximity event based at least in part on the lane change information; and

if the proximity event is not cancelled, output the proximity event.

2. The system of claim 1 , wherein the lane change information comprises a cut off event.

3. The system of claim 2 , wherein the cut off information comprises a rapid decrease in proximity.

4. The system of claim 2 , wherein the cut off information comprises an identification of a vehicle in a forward facing camera.

5. The system of claim 1 , wherein the lane change information comprises a lane leaving event.

6. The system of claim 5 , wherein the lane leaving information comprises an indication from a vision system of a vehicle leaving a lane.

7. The system of claim 6 , wherein an indication of leaving a lane by a vision system is determined based at least in part on a lane marker.

8. The system of claim 5 , wherein the lane leaving information comprises a rapid increase in proximity.

9. The system of claim 1 , wherein determining the proximity event comprises determining that a proximity sensor detects a vehicle within a proximity time threshold.

10. The system of claim 9 , wherein the vehicle is within a proximity time threshold for greater than a sustained proximity time threshold.

11. The system of claim 10 , wherein the sustained proximity time threshold is increased in the event the lane change information comprises cut off information.

12. The system of claim 9 , wherein the proximity event is canceled in the event the lane change information comprises lane leaving information.

13. The system of claim 9 , wherein the proximity event is stored in a queue.

14. The system of claim 13 , wherein the proximity event is released from the queue in the event the lane change information does not comprise lane leaving information.

15. The system of claim 13 , wherein the proximity event is released from the queue in the event it has been in the queue for greater than a threshold time.

16. The system of claim 1 , wherein determining the proximity event is based at least in part on a vehicle speed.

17. The system of claim 16 , wherein a proximity time threshold is based at least in part on the vehicle speed.

18. The system of claim 16 , wherein the proximity event is determined based at least in part on whether the vehicle speed is greater than a vehicle speed threshold.

19. A method for determining proximity events for a vehicle, comprising:

receiving a lane change information, wherein the lane change information includes sensor-collected data of behavior of a vehicle relative to at least one lane;

determining, using a processor, a proximity event based at least in part on a distance between the vehicle and a nearby vehicle being below a threshold distance for a threshold duration;

determining, using the processor, whether to cancel the proximity event based at least in part on the lane change information; and

if the proximity event is not cancelled, outputting the proximity event.

20. The system of claim 1 , wherein determining the proximity event comprises determining that a proximity sensor detects a vehicle within a proximity time threshold and the proximity time varies with road conditions.

21. A computer program product for determining proximity events, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for:

receiving a lane change information, wherein the lane change information includes sensor-collected data of behavior of a vehicle relative to at least one lane;

determining, using a processor, a proximity event based at least in part on a distance between the vehicle and a nearby vehicle being below a threshold distance for a threshold duration;

determining, using the processor, whether to cancel the proximity event based at least in part on the lane change information; and

if the proximity event is not cancelled, outputting the proximity event.