This is for the original poster, a PVD asking for help in sorting. I'm a third year Seasonal PVD. I sort by street addresses, using the UPS app on my phone to look at the map section, and click on one in the area I want to work first. After a week or two on a new route, I have most of the street names memorized. So I sort the packages in the order I'm going to deliver them, by street name and house number. No doubling back, just a big circle and then back to the pod to reload. I usually do this for all the packages in my pod before I make my first trip and it's still daylight, so everything is in order for the next trips. Last season, we usually got called when the driver was on the way to my pod, and typically started at 11:30 or noon. And it starts getting dark about 4:30 this time of year. Last year, I usually finished at 9 or 10 p.m., so half my deliveries were at night.
I work out of a (big) 4-door sedan, so I usually have to do 3 or 4 trips to empty my pod. PVDs will never be as fast as UPS regular drivers, because of all the dead time PVDs have in going back to the pod and loading up again. With the packages for each trip sorted by the map view, I load the back seat from the driver's side, pushing everything to the passenger side, so when I get to the next delivery stop, the package is the one closet to the passenger side door. Big packages go in the trunk, and I make a note of it in the steno pad I use for UPS notes. Once the back seat is full, I fill the trunk with the rest of the packages for that trip, still in map order, so I can move them to the rear seat and keep them in map order and finish that area before going back to my pod and reload.
Some of the trainers or road managers I've had insist I have to deliver in the sequence of the list view on the app, but that always requires doubling back to areas I've already delivered to. They tell me the magical UPS computers put the list in order for the quickest delivery, but that's just not true. The list and HIN numbers are not a bad starting point, but using the map view is better and quicker once you know the area.
As someone earlier said, I also do any apartments and condos first while it's still daylight and far easier to find the addresses. Single family homes are easier to find at night, as most, but not enough, have their street address on their mailbox, or above their garage. I still have to use my handheld powerful spotlight to reach out and see the street address a lot of times. I also use that spotlight on and pointed at the ground while making the delivery to their front door, so I don't trip over anything, especially Christmas light extensions all over the place. Also, the moving spotlight lets the folks inside see I'm coming and I don't get shot (burglars and thieves work in the dark). And I think the spotlight would spook/slow a dog that wants to come at me.
I hope the above helps other new SPVDs, if UPS keeps using PVDs.