How about a van full of people going to the airport - 15 people who don't know each other -- in close proximity -- arrest all 15? How about a busload, say 50?
Common sense is exactly what's missing in this: define 'close proximity' -- is it the size of a car, a van, a bus, a train car (let's grab all 250 of 'em)?
Going to rely on the common sense of the arresting cop, who's ticked off 'cause he's getting jacked around? Come on, use some common sense!