To ease congestion caused by delivery trucks, we might consider a no parking zone for one or two hours per day directly next to certain businesses along NP & 1st avenues north.

As an example, take a bar such as the Old Broadway: On delivery days mandate No Parking from 10-11 a.m., along the east side of their building along NP Avenue. To ensure that drivers notice the signage, attach a small LED light to the No Parking sign. Attach a timer to the light and set it to start flashing 90 minutes before delivery parking hours go in to effect. (I believe parking is limited to 90 minutes per cycle on these avenues.) At 11 a.m, the flasher turns itself off. Repeat for afternoon deliveries. Site other LED signage as needed on the two avenues. (All deliveries should be scheduled so they do not conflict with rush hour traffic).

Another idea I had was that a special traffic barricade be carried by delivery trucks. The barricade would fold out and be placed behind the truck, blocking the entire lane. These barricades would incorporate battery-powered bright orange LED arrows that would flash/scroll from right to left (or visa versa). The idea of course being a very bright moving arrow alerting drivers well in advance that they needed to switch lanes. (The same type of LED system used in patrol cars.) Position the barricade 30-50 feet behind the delivery truck so that shoppers who parked before the arrival of the truck would still be able to pull out from the curb.
(Alternative: attach a roof-mount LED system to the rear of each truck.)

Using the strobing LED system, the driver could make deliveries to either side of the avenue by parking in the center lane of traffic and switching the arrow to strobe from left to right. He would park far enough back from the intersection to allow other drivers to make a left turn onto Broadway.

Any other ideas out there?