Adjustable automatic window tinting for autonomous vehicles

1. A method comprising:

transporting a passenger to a requested destination using an autonomous vehicle (AV) having a plurality of windows comprising electrically switchable smart glass;

during the transporting, monitoring a heating, ventilation, and air conditioning (HVAC) load of the AV;

subsequent to the HVAC load of the AV exceeding a predetermined threshold value:

automatically incrementally adjusting a tint level of at least one of the windows; and

continuing to automatically incrementally adjust the tint level of the at least one window until the HVAC load of the AC no longer exceeds the predetermined threshold value;

during the transporting, monitoring a metric related to arrival of the AV at the destination; and

untinting the windows when the monitored metric has a prescribed relationship to a threshold value.

2. The method of claim 1 wherein the monitored metric comprises a time-to-destination, wherein the time-to-destination comprises an amount of time it will take the AV to arrive at the destination.

3. The method of claim 2 further comprising, during the transporting, comparing the time-to-destination with a threshold time, wherein the untinting the windows comprises untinting the windows when the time-to-destination falls below the threshold time.

4. The method of claim 1 wherein the monitored metric comprises a distance-to-destination, wherein the distance-to-destination comprises a distance the AV will have to travel before arriving at the destination.

5. The method of claim 4 further comprising, during the transporting, comparing the distance-to-destination with a threshold distance, wherein the untinting the windows comprises untinting the windows when the distance-to-destination falls below the threshold distance.

6. The method of claim 1 wherein the untinting the windows comprises applying an electrical signal to the windows.

7. The method of claim 1 , wherein the electrically switchable smart glass comprises at least one of an electrochromic device and a polymer-dispersed liquid crystal (PDLC) device.

8. The method of claim 1 , wherein the windows comprise at least one of a windshield, a rear window, and a side window.

9. A method comprising:

transporting a passenger to a requested destination using an autonomous vehicle (AV) having a plurality of windows comprising electrically switchable smart glass a level of tint of which may be changed by applying an electrical signal thereto; and

during the transporting, monitoring a heating, ventilation, and air conditioning (HVAC) load of the AV;

subsequent to the HVAC load of the AV exceeding a predetermined threshold value:

automatically incrementally adjusting a tint level of at least one of the windows; and

continuing to automatically incrementally adjust the tint level of the at least one window until the HVAC load of the AC no longer exceeds the predetermined threshold value.

10. The method of claim 9 further comprising, during the transporting, monitoring a time-to-destination, wherein the time-to-destination comprises an amount of time it will take the AV to arrive at the destination.

11. The method of claim 10 further comprising:

comparing the time-to-destination with a threshold time; and

untinting the windows when the time-to-destination falls below the threshold time.

12. The method of claim 9 further comprising, during the transporting, monitoring a distance-to-destination, wherein the distance-to-destination comprises a distance the AV will have to travel before arriving at the destination.

13. The method of claim 12 further comprising:

comparing the distance-to-destination with a threshold distance; and

untinting the windows when the distance-to-destination falls below the threshold distance.

14. The method of claim 9 , wherein the electrically switchable smart glass is implemented using at least one of electrochromic technology and polymer-dispersed liquid crystal (PDLC) technology.

15. A system comprising:

an autonomous vehicle (AV) for providing transportation from a pick-up location to a destination, the AV having a plurality of windows comprising electrically switchable smart glass, wherein a tint level of the electrically switchable smart glass may be incrementally adjusted by applying an electrical signal thereto; and

an adjustable automatic window tinting (AAWT) module for automatically incrementally adjusting a tint level of at least one of the windows subsequent to a heating, ventilation, and air conditioning (HVAC) load of the AV exceeding a predetermined threshold value and continuing to automatically incrementally adjust the tint level of the at least one window until the HVAC load of the AC no longer exceeds the predetermined threshold value.

16. The system of claim 15 , wherein the AAWT module further monitors a time-to-destination during the transportation, wherein the time-to-destination comprises an amount of time it will take the AV to arrive at the destination.

17. The system of claim 16 , wherein the AAWT module further:

compares the time-to-destination with a threshold time; and

untints the windows when the time-to-destination falls below the threshold time.

18. The system of claim 15 , wherein the AAWT module further monitors a distance-to-destination during the transportation, wherein the distance-to-destination comprises a distance the AV will have to travel before arriving at the destination.

19. The system of claim 18 wherein the AAWT module further:

compares the distance-to-destination with a threshold distance; and

untints the windows when the distance-to-destination falls below the threshold distance.

20. The system of claim 15 , wherein the electrically switchable smart glass comprises at least one of an electrochromic device and a polymer-dispersed liquid crystal (PDLC) device.