Vehicle lamp system comprising a computer adjusting the color or direction of a lamp based on a road user's gaze direction

1. A computer comprising a processor and a memory storing instructions executable by the processor to:

receive sensor data indicating a road user;

determine a gaze direction of the road user based on the sensor data;

adjust a color of a lamp of a vehicle based on the gaze direction; and

adjust a direction of the lamp based on the gaze direction.

2. The computer of claim 1 , wherein the instructions further include instructions to, before adjusting the color of the lamp, aim the lamp at the road user.

3. The computer of claim 2 , wherein the instructions further include instructions to, before aiming the lamp at the road user, lower a brightness of the lamp.

4. The computer of claim 3 , wherein the instructions further include instructions to determine a distance to the road user, wherein lowering the brightness of the lamp is based on the distance.

5. The computer of claim 1 , wherein the instructions further include instructions to determine a predicted action of the road user based on the gaze direction, wherein adjusting the color of the lamp is based on the predicted action.

6. The computer of claim 5 , wherein determining the predicted action includes selecting the predicted action from a list, and the list includes crossing a crosswalk and not crossing the crosswalk.

7. The computer of claim 5 , wherein determining the predicted action includes selecting the predicted action from a list of predicted actions stored in the memory.

8. The computer of claim 1 , wherein the instructions further include instructions to perform a maneuver of the vehicle based on the gaze direction.

9. The computer of claim 8 , wherein performing the maneuver occurs after adjusting the color of the lamp.

10. The computer of claim 8 , wherein the road user is a pedestrian, and performing the maneuver based on the gaze direction includes stopping until the pedestrian crosses a crosswalk based on the gaze direction being toward the crosswalk.

11. The computer of claim 1 , wherein the road user is one of a pedestrian, a bicyclist, or a manned vehicle.

12. The computer of claim 1 , wherein adjusting the color of the lamp based on the gaze direction includes adjusting the color of the lamp to green based on the gaze direction being toward a crosswalk.

13. The computer of claim 1 , wherein adjusting the color of the lamp based on the gaze direction includes adjusting the color of the lamp to red based on the gaze direction being away from a crosswalk.

14. The computer of claim 1 , wherein the instructions further include instructions to move a beam of the lamp along a crosswalk based on the gaze direction being toward the crosswalk.

15. A system comprising:

a lamp; and

a computer communicatively coupled to the lamp;

wherein the computer is programmed to:

receive sensor data indicating a road user;

determine a gaze direction of the road user based on the sensor data;

adjust a color of the lamp based on the gaze direction; and

adjust a direction of the lamp based on the gaze direction.

16. The system of claim 15 , wherein the lamp is a headlamp of a vehicle.

17. The system of claim 15 , further comprising a base, wherein the lamp is mounted to the base and rotatable in two degrees of freedom relative to the base.

18. The system of claim 15 , wherein the color of the lamp is adjustable to green, red, and untinted.

19. A method comprising:

receiving sensor data indicating a road user;

determining a gaze direction of the road user based on the sensor data;

adjusting a color of a lamp of a vehicle based on the gaze direction; and

adjusting a direction of the lamp based on the gaze direction.