Don't know if Christchurch is worse than other cities but we have a lot of very busy intersections where you don't get a green arrow to turn right. So everyone is forced to turn on late orange/red after making sure no idiot is still coming through straight ahead.
Thats where I'm at/above video is from
And well aware of that. BUT, the 2nd and 3rd car should NOT be following suit. Sure it may be only 1 per change, but It's quite clear cut regardless of how poopy it is that it should't be necessary or occur.
The number of times I've watched the lights, stopped on amber to allow the turning car to proceed - and they're so focused on traffic and not the light changing to actually turn tells me where the mentality lies. Watch for runners, don't feel confident in lights and drivers adhering.