It's just gonna be the usual storm in a tea cup, just like last month when they changed the penalty for using your phone, everybody lost their shit and acted like it wasn't illegal to do it before then after a month or so everyone has forgotten the change and are back to using them like they were before.
It'll be the same with this.
For the next 2 weeks everyone will be careful, there'll be police on every corner and people will act like they've only just realised speeding is illegal, then buy the end of the month everything will be back to normal.
At the end of it the only that's changed is the amount you'll be fined