If you are arrested for a first DUI in Alabama you will be subject to both administrative (license suspension) and criminal (jail, fines, etc.) penalties. The assessment of penalties is case-specific -- that is, various circumstances such as the amount of damage, injury, speed or other other factors will influence the penalties.
Sobriety checkpoints are permitted in Alabama (see 515 So.2d 149 (Ala Cr. 1987)). These checkpoints (also referred to as "mobile checkpoints" or "roadblocks") are police traffic stops that are not tied to any specific or individual suspicions.