Every time I read this my heart breaks for the families. Of course the driver was in his seventies. Of course the police will never question if he took meds forbidding him to operate heavy machinery.
Edit: took it down. Did not see someone fast faster than I I
Obviously it wouldn’t be a one size fits all locations situation
If there’s parking nearby use bollards.
If it’s a road way with vehicles driving parallel to a sidewalk instead of a 6" tall curb make it a concrete wall instead 24" high with gaps where crosswalks are located.