What is the most important thing you must to know in the logistics and transportation field to help you to achieve the higher KPIs in your company ?

The process knowledge, the transit time of the shipments and the experience will help an individual to achieve his daily KPI's.

Let me know if you find it correct.

The Most important thing you should know is keep an eagles eye for the market conditions and be vigilant about the location where you are located. 

I mean the location where your company is situated, you should be aware of the local streets, location names so that when you are planning for any transportation of your staff of your items. The driver who is taking the stock should be planned to visit multiple locations while doing the trip and all the deliveries which are planned by you should be the radius of 20 kilometers from the first delivery which he is going to make.

This will allow you to reduce the transportation overhead cost.

I hope this helps you.