Another point, people don't zipper merge here . Its rare when you see a good zipper. Our roads are packed, people arent nice, a lot of drivers rather hit their brakes and wait for a good opening instead of forcing a zipper merge, especially if a driver wont let you in.
There have been so many times I've tried to merge onto a highway at speed, and drivers refuse to move out of the right lane and will force you into the breakdown, its bizarre,