The whole story is about how you cant do this without lifetime annotations. In other words: you can try limiting all cars to 10mph, closing the road, automatic

The whole story is about how you cant do this without lifetime annotations. In other words: you can try limiting all cars to 10mph, closing the road, automatically switching out all car tyres with skid-proof versions while in motion, or anything else. But… just turn the god damn lights on and put up a barrier between lanes. It works on every other road.