There may not be a lot we can do about this sort of attack but bollards to stop vehicles driving down pedestrian areas would be a start. And before anybody says this would inconvenience e.g. emergency vehicles, look at the type they have in Cambridge where an electronic key (or something ) lowers the bollard for buses and other bona fide vehicles .
There was an outcry in Birmingham recently at the council's decision to fell some lovely old trees to replace them with anti-terrorist barriers/bollards.
We can't have it both ways.
Wrong side driving social media stunt
Is it normal to talk to yourself?
Water shortages and hosepipe bans
These terror attacks are something we wouldn't have dreamed about, now it happening all over the world.