No. What ought to be done is impairment testing, which is the direct way of checking if a driver is safe to drive regardless of the source of impairment.
The police cars should have a driving simulator installed that works with the steering wheel and the pedals of the car. Have suspects do on the spot a driving test in the sim. Pass/fail should be deterministic (the game would determine it).
Lmao that’s actually kinda awesome.
I suck at driving computer games, I would definitely fail on my first few tries.