What I like to do is locate my next call BEFORE I start driving there. I make a mental note of the exit I will be taking as well as which direction I will be going once I do exit.
Another tip is when the call comes in, I ask myself what I used for parts the last time I had a simular call.
I might want to swing by the parts house and pick me up a motor or some gas or something.
Another tip is when your at an account and your not familiar with their layout .... get on the horn and find someone in your company who is familiar and you wont spent untold wasted time looking at or working on the wrong piece of equipment.
Please feel free to make contributions. Thanks.