The night was good went to a bar had about 2 drinks...on my way home i ran a red light..about 12:00 pm.

got pulled over for running the light.

cop asked if i had been drinking..i said yes..but

i passed the breatherlizer walked the line straight..etc..he arrested my for dui but i straight passed everything even the cop was confused. can they get away with arresting me for the dui and not running the light?