4 way stops.
If you come to a 4 way intersection and stop. And I'm approaching from your left or right but still 100 feet from the intersection. GO, goddamn it! Don't wait for me to get to the intersection and stop then make we wait for you to get the hell out of the intersection before I can go.
Afraid I don't see the stop sign? Even if I don't, I'll see your damn car. Even if you are afraid I'm going too fast to stop, I can slow enough to not hit you, so just GO!
When in the course of human events, you're traveling along at say 30 or 40, and the car in front of you makes a right or left turn. You will have to slow to probably 15 or even 5 to avoid hitting them.....no problem. BUT, once they have made their turn, there is not one reason on God's green earth for you to proceed at 15 for the next quarter mile before you resume speed. The faster you stop becoming an obstruction, the shorter the "memory" will last in the traffic pattern.
And another thing, you are supposed to be doing the same speed as traffic when you get to the bottom of the ramp so merging is a very simple thing.
If you only have 70 hp stay the hell off the road.