This one for example, has been the norm in practice for some time.
The current rule should allow the red car to go first. It never worked in practice though. At least now its official in the new rules.
I have never seen the green car give way under current rules. Most dont even know that rule exists......
As others have said, most people won't notice this rule change as they either don't know or ignore the current rule. I once almost got taken out by a bus that failed to give way at a T-intersection when it was supposed to. The bus driver then loudly and very angrily abused me for getting in his way!