Hell, i'm not even a police officer and I can pull in behind at least 70% of the cars on the road and find a probable cause to pull them over after following for 3 minutes.... when all else fails, your tire tread looks low. Go ahead an piss a DPS officer off after he does pull you over and let him give you a little road side inspection. Just ask my Grandpa, rest his soul. He got a ticket for speeding & low tire tread.