What can be done to prevent Berlin-style attacks in modern cities?

As featured in The Guardian

Berlin Attack


“When you have an open event, something that’s almost ad hoc such as a Christmas market, then the need to have greater security measures has become more pronounced in light of these events in Nice and now in Berlin,” he said. “Now designers and scientists have got the technology to create aesthetically pleasing barriers to prevent cars from ramming into buildings,” said Abbas. “As part of that you have things like innocent flower pots outside buildings that are actually enforced with concrete and metal to prevent a truck from going over them. They are hidden and blended into the aesthetics of the building.” “You try to protect yourself from any possible risk, but there will always be something that creeps through. With terrorism you’re always playing a game of catch-up in some respects and this is where lessons learned from across the world become important.”