This is NOT about reducing traffic fatalities.  It's a power grab by the police.  If they truly wanted to nab impaired drivers, how about setting up their roadside checkpoints right outside the parking lots of bars and nightclubs.  No need to be random about it:  that's where they're most likely to find impaired people getting behind the wheel of a vehicle.

BTW distracted driving is one of the top 3 causes of traffic crashes.  When are the penalties for that going to catch up with the penalties for impaired?