Authorized fuel up spots?

by this question I'm assuming that you work for tmc . Ask your dm or check your driver packet and it sgold give you all the information that you need

 

Mostly pilot/flying j is our fuel network... Only fuel out of network if there aren't any of those around and for that you need authorization

 

There is a lot that goes into this besides just locations. Typically, you will get a location and how much fuel to put on along with your load screen. You are expected to hit a certain percentage of your advised fuel stops. Otherwise it lowers the score you need to move up in pay. You will find that if you follow the fuel stops that TMC gives you, you will most likely load with about half tanks or less and add fuel after you have loaded. TMC pulls a lot of heavy freight and they don't want you going into a shipper with full tanks and have to put 48000 on the trailer. Fueling after you load depends on how heavy you are.
Your trainer will explain this to you during your 5 weeks with him.