The car that killed those poor ladies was a PHV. The country currently has 75,000 PHVs and one of the reasons why there are so many is because people don't want to use public transport unless they have to.
If they could purchase PMDs they wouldn't need to hire private vehicles and the numbers would drop considerably and there is every possibility that this lethal PHV would not have been on the streets on that fateful day. In fact it might not have existed in the first place.
The way to reduce the road fatality rate is to introduce an all out campaign to get people out of their cars and on to PMDs. In fact PMDs should be subsidised to encourage their use. Of course a few pedestrians will be run over once in a while but they're far more likely to survive being hit by a 20kg PMD going 25kph compared to a 1000kg car going 60kph.
The net result will be less people dead from road accidents which has to be a good thing for everyone.