1. Accelerating or decelerating quickly
2. Almost striking an object, curb, or vehicle
3. Appearing to be drunk (e.g., eye fixation, face close to windshield)
4. Braking erratically
5. Drifting; or moving in a straight line at a slight angle to the roadway
6. Driving anywhere other than on a road designated for vehicles
7. Driving into opposing crossing traffic
8. Driving on the wrong side of the road
9. Driving slower than 10 mph below the speed limit
10. Driving with headlights off at night
11. Following too closely
12. Signaling that is inconsistent with driving actions
13. Slow response to traffic signals
14. Straddling center or lane marker
15. Straddling lanes or tires on the center line
16. Stopping inappropriately (other than in a traffic lane)
17. Stopping without cause in traffic lane
18. Swerving
19. Tailgating
20. Tires on center marker or lane marker
21. Turning with wide radius
22. Turning abruptly or illegally
23. Weaving
24. Stopping without cause or erratic braking
25. Slow response to traffic signals (e.g. sudden stop or delayed start)
26. Weaving or zigzagging across the road

What to do when you spot an Impaired Driver:

1. Stay far behind the suspected drunk driver.
2. Get out of the way and expect the unexpected.
3. Wear your safety belt (and make sure that any children or other passengers have their safety belts fastened as well) - It is one of your best defenses against a drunk driver.
4. Stop right away and look for a phone.
5. Report suspected and impaired drivers to the CHP or local police by dialing 911. Give the location, direction of travel, and description of the car and driver's behavior.
   

What not to do when you spot an Impaired Driver: