Would you like to know how I would fix the problem?
I would. Please proceed...
Therefore, impairment testing, such as the "road sobriety test" and various other more high-tech means, would likely replace the breathalyser or blood tests as measures of impairment.
But is this possible/feasible? Is there really a way to measure sleepiness or distractedness or whatever else? If there is, your idea I think is something I would agree with.
I'ven't ever heard a plan like this, but it is indeed quite intriguing, particularly the last paragraph.