I'm always intrigued by this sort of setup.
So if we say the restricted hours are peak hours 7am-7pm surely there needs to be a journey time considered that would rule out the rat run? For example the delivery drivers refusing to enter. If they are stopping and delivery to one or multiple houses then time taken between entry and exit would seem to rule out it being used for a rat run.
Similarly for residents. Will they be able to register their vehicles? If I'm picking up my son for football for instance, I would enter one end of my street, pick him up curbside and then exit immediately at the other end.
Seems flawed otherwise.