Cambridge MA delivery truck idles for 1 hour

Contrary to the idling ordinance in Cambridge, MA, drivers usually are unaware of it and keep their vehicles running. Harvard takes advantage of the lax enforcement by permitting deliveries after legal hours contrary to the noise ordinance. Delivery truck drivers park for the Fogg Museum in a No Stopping Zone creating traffic hazards and creating more noise from drivers honking their car horns.
On Friday June 15, 2007 one truck was parked in violation of three ordinances for more than one hour with his engine running the whole time. I arrived at about 9:55 PM. The truck was parked there until 11:08 PM when it backed into the driveway to deliver his goods. Deliveries are permited from 7:00 AM until 9:00 PM in Cambridge.
My call to the Cambridge police dispatchers brought no patrol car. It may have been busy with higher priority calls.