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Systems, apparatuses, and methods for aligning a radar sensor included in a vehicle. One method includes generating a laser cross-beam in front of the radar sensor that is approximately perpendicular to a thrust line of the vehicle and mounting a sensor alignment apparatus on the radar sensor. The s

Systems, apparatuses, and methods for aligning a radar sensor included in a vehicle. One method includes generating a laser cross-beam in front of the radar sensor that is approximately perpendicular to a thrust line of the vehicle and mounting a sensor alignment apparatus on the radar sensor. The sensor alignment apparatus includes a mounting arm and a receiver flag. The mounting arm supports the receiver flag, and the receiver flag includes a first surface that intersects the cross-beam at a first point and a second surface opposite the first surface that intersects the cross-beam at a second point. The method further includes determining a position of the first point, determining a position of the second point, determining a difference between the position of the first point and the position of the second point, and determining an adjustment for the radar sensor based on the difference.

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1. A sensor alignment apparatus comprising: a mounting arm configured to be mounted on a radar sensor included in a vehicle, anda receiver flag supported by the mounting arm and positioned in front of the radar sensor, the receiver flag including a first surface for receiving a first laser beam at a

1. A sensor alignment apparatus comprising: a mounting arm configured to be mounted on a radar sensor included in a vehicle, anda receiver flag supported by the mounting arm and positioned in front of the radar sensor, the receiver flag including a first surface for receiving a first laser beam at a first point and a second surface opposite the first surface for receiving a second laser beam at a second point, wherein the first laser beam and the second laser beam are approximately perpendicular to a thrust line of the vehicle and a difference between a position of the first point and a position of the second point indicates an adjustment for the radar sensor to align the radar sensor with the thrust line. 2. The apparatus of claim 1, wherein the receiver flag is approximately perpendicular to the mounting arm. 3. The apparatus of claim 1, wherein the mounting arm includes a bubble level. 4. The apparatus of claim 1, wherein the mounting arm is configured to mate with the radar sensor using at least one of a suction cup, an adhesive, and a static interface. 5. The apparatus of claim 1, wherein the mounting arm is configured to clip on to an external surface of the radar sensor. 6. The apparatus of claim 1, wherein the mounting arm is configured to snap on to an external surface of the radar sensor. 7. The apparatus of claim 1, wherein the mounting arm includes a feature that aligns with a feature on the radar sensor for mounting the mounting arm. 8. A system for aligning a sensor, the system comprising: wheel alignment equipment including a first arm connectable to a first wheel of a vehicle and including a first laser for generating a first visible laser beam approximately perpendicular to a thrust line of the vehicle.a second arm connectable to a second wheel of the vehicle and including a second laser for generating a second visible laser beam approximately perpendicular to the thrust line of the vehicle; anda sensor alignment apparatus including a mounting arm configured to be mounted on a radar sensor included in the vehicle, anda receiver flag supported by the mounting arm and positioned in front of the radar sensor, the receiver flag including a first surface for receiving the first laser beam at a first point and a second surface opposite the first surface for receiving the second laser beam at a second point, wherein a difference between a position of the first point and a position of the second point indicates an adjustment for the radar sensor to align the radar sensor with the thrust line. 9. The system of claim 8 wherein the mounting arm includes a bubble level. 10. The system of claim 8 wherein the receiver flag is positioned approximately perpendicular to the mounting arm. 11. The system of claim 8 wherein the position of the first point includes a first distance to a front of the receiver flag from the first point and a second distance to a back of the receiver flag from the first point. 12. The system of claim 11 wherein the position of the second point includes a first distance to the back of the receiver flag from the second point and a second distance to a front of the receiver flag from the second point. 13. The system of claim 12 wherein a difference between the first distance of the first point and the second distance of the second point and a difference between the second distance of the first point and the first distance of the second point indicates an adjustment for the radar sensor to align the radar sensor with the thrust line. 14. A method for aligning a radar sensor comprising: generating a laser cross-beam in front of a radar sensor included in a vehicle, the laser cross-beam approximately perpendicular to a thrust line of the vehicle;mounting a sensor alignment apparatus on the radar sensor, the apparatus including a mounting arm and a receiver flag, the mounting arm supporting the receiver flag and the receiver flag including a first surface intersecting the cross-beam at a first point and a second surface opposite the first surface intersecting the cross-beam at a second point;determining a position of the first point on the receiver flag;determining a position of the second point on the receiver flag;determining a difference between the position of the first point and the position of the second point; anddetermining an adjustment for the radar sensor based on the difference. 15. The method of claim 14, wherein generating the laser cross-beam includes generating the laser cross-beam using wheel alignment equipment, the wheel alignment equipment including a first arm coupled to a first wheel and including a first laser generating a first laser beam and a second arm coupled to a second wheel and including a second laser generating a second laser beam, wherein the first laser beam and the second laser beam generate the laser cross-beam. 16. The method of claim 14, wherein determining the position of the first point includes determining a first a distance to a front of the receiver flag from the first point and a second distance to a back of the receiver flag from the first point. 17. The method of claim 16, wherein determining the position of the second point includes determining a first distance to the back of the receiver flag from the second point and a second distance to the front of the receiver flag from the second point. 18. The method of claim 17, wherein determining a difference between the position of the first point and the position of the second point includes determining a difference between the first distance of the first point and the second distance of the second point and a difference between the second distance of the first point and the first distance of the second point.