Safety barriers near Chilham on the busy A28. This footway is also used (Shared space) by cyclists in the interests of their safety.
The question is:- Was the crash-barrier put in to protect vehicles; i.e.: prevent M/Vs from going down a bank and crashing into houses, or was it put in place to protect pedestrians? The answer could be; 'probably', but not with the well-being pedestrians as the prime concern. Thankfully that has been the net result, i.e.: 'a spin-off'.
Here (looking in the opposite direction) one can see that the barrier protects houses as well, which is not a bad thing.
In the terms of Crash Barriers, putting pedestrians first is unusual.