What does "1ST" mean when it follows a DUI charge in AZ and are all the BAC levels charged in case BAC is challenged?
I suspect "1st" means first offense, and that the prosecutor charges all of the BAC levels so that if the defense successfully challenges a particular level, all of the lower levels remain (sort of like a lesser included offense). Is this correct?
The penalities for DUI's can be made more harsh if the person convicted has prior DUI convictions within a certain amount of time. And you are correct in regards to why all are charged. Plus, for the DUI/Impaired, if the prosecutor can prove the defendant's BAC was above .08%, then the jury can assume the driver/defendant was impaired.