Specifying unavailable locations for autonomous vehicles

1. A method comprising:

receiving, by one or more computing devices, a request for a vehicle from a client computing device, wherein the request identifies a first location;

determining, by the one or more computing devices, whether the first location is within a threshold distance outside of a service area of the vehicle;

when the first location is within the threshold distance outside of the service area of the vehicle, identifying, by the one or more computing devices, a second location within the service area of the vehicle where the vehicle is able to stop for a passenger and based on the first location;

providing, by the one or more computing devices, a map and a marker identifying the position of the second location on the map for display on the client computing device;

after providing the map, receiving, by the one or more computing devices, user input confirming a pickup location within the service area and wherein the pickup location is a location different from the first location; and

in response to receiving the user input, dispatching, by the one or more computing devices, the vehicle to pick up a user at the pickup location by sending an instruction to the vehicle to cause the vehicle to maneuver itself towards picking up the user.

2. The method of claim 1 , further comprising providing for display with the map and the marker, a street level image corresponding to the second location and a second marker identifying an area around the second location corresponding to a likely location that the vehicle will stop for the passenger.

3. The method of claim 2 , further comprising:

receiving user input indicating that the map marker has been moved to a different position on the map;

identifying a third location based on the user input; and

providing a second street level image for display with the map.

4. The method of claim 3 , wherein the pickup location is the third location.

5. The method of claim 1 , wherein the pickup location is the second location.

6. The method of claim 1 , further comprising providing for display on the client computing device navigation directions between the first location and the second location.

7. A system comprising one or more computing devices configured to:

receive a request for a vehicle from a client computing device, wherein the request identifies a first location;

determine whether the first location is within a threshold distance outside of a service area of the vehicle;

when the first location is within the threshold distance outside of the service area of the vehicle, identify a second location within the service area of the vehicle where the vehicle is able to stop for a passenger based on the first location;

provide a map and a marker identifying the position of the second location on the map for display on the client computing device;

after providing the map, receiving, by the one or more computing devices, user input confirming a pickup location within the service area and wherein the pickup location is a location different from the first location; and

in response to receiving the user input, dispatch the vehicle to the pickup location to pick up a user by sending an instruction to the vehicle to cause the vehicle to maneuver itself towards picking up the user.

8. The system of claim 7 , wherein the one or more computing devices are further configured to provide for display with the map and the marker, a street level image corresponding to the second location and a second marker identifying an area around the second location corresponding to a likely location that the vehicle will stop for the passenger.

9. The system of claim 8 , wherein the one or more computing devices are further configured to:

receive user input indicating that the map marker has been moved to a different position on the map;

identify a third location based on the user input; and

provide a second street level image for display with the map.

10. The system of claim 9 , wherein

the third location is the pickup location.

11. The system of claim 7 , wherein

the second location; and

is the pickup location.

12. The system of claim 7 , wherein the one or more computing devices are further configured to provide for display on the client computing device navigation directions between the first location and the second location.

13. A non-transitory, tangible machine readable medium on which instructions are stored, the instructions, when executed by one or more processors, cause the one or more processors to perform a method, the method comprising:

receiving a request for a vehicle from a client computing device, wherein the request identifies a first location;

determining whether the first location is within a threshold outside of a service area of the vehicle;

when the first location is within the threshold distance outside of the service area of the vehicle, identifying a second location within the service area of the vehicle where the vehicle is able to stop for a passenger based on the first location;

providing a map and a marker identifying the position of the second location on the map for display on the client computing device;

after providing the map, receiving user input confirming a pickup location within the service area and wherein the pickup location is a location different from the first location; and

in response to receiving the user input, dispatching the vehicle to the pickup location to pick up a user by sending an instruction to the vehicle to cause the vehicle to maneuver itself towards picking up the user.

14. The medium of claim 13 , wherein the method further comprises providing for display with the map and the marker, a street level image corresponding to the second location and a second marker identifying an area around the second location corresponding to a likely location that the vehicle will stop for the passenger.

15. The medium of claim 14 , wherein the method further comprises:

receiving user input indicating that the map marker has been moved to a different position on the map;

identifying a third location based on the user input; and

providing a second street level image for display with the map.

16. The medium of claim 15 , wherein

the third location is the pickup location.

17. The medium of claim 13 , wherein the pickup location is the second location.