The mod description teases 2 tips and tricks. But I found only the Truck stops one. Which one is the other?

The other one is Truck schedules. It unlocks once you build your first truck stop, and then it shows up right under "Truck stops" in the same Tips and Tricks category. It covers schedules, wait conditions, interrupts and truck groups, with a tanker truck going between two stops.

Found it, somehow I didn't trigger in my initial tests.
Might be because I set down a truck stop before researching it.