]A good driver is not only one that can get stops done on time but can do all of that and do it safely.
Couldn't agree more. Follow the methods and you'll do fine. The time saving methods include the things you've already been taught.. keeping the keys on your finger, knowing the next stop, walking with a sense of urgency etc. Once you get behind that wheel, forget about the "sense of urgency" you're supposed to maintain during delivery. Follow traffic laws and relax. Eventually, you'll learn shorter paths of travel, learn who to see at the stop and who to avoid, and you'll be able to visualize the addresses in the order you think it will work.
I come down pretty hard on management when they consistantly screw up, but they know you're not going to produce the same results as a seasoned driver. They don't want to have to explain late airs to corporate anymore than you do. Relax and pay attention to detail.