This can effect the suspension of your license. Punishment for driving while drunk vary from jurisdiction to jurisdiction according to laws of the state. This is non-probationable. This may be hard to prove in cases of accidents where there are no witnesses as to who was driving the vehicle. Evidence can be suppressed if the police officer did not have legal cause to stop, detain, and arrest.
Sobriety roadblocks present particularly complex issues.
If Miranda warnings were not given at the appropriate time, statements may be suppressed. Testing during the absorptive phase may cause inaccurate test results.