Lets say you are traveling uphill behind a slow-moving big rig and you notice that there is another large truck in front of it later you enter a passing zone What should you do?

Lets say you are traveling uphill behind a slow-moving big rig and you notice that there is another large truck in front of it later you enter a passing zone What should you do?
depends on what im driving if i have a v8 ill pass if i have a 4 banger i wont because i could die, car would be too slow to doit quick and safely