Worried shoppers are calling for “ridiculously high” speed bumps that scrape and damage cars to be lowered. The new traffic-calming measures were installed outside Curry’s at Canterbury Retail Park last month. They are on either side of a pedestrian crossing – but some claim they are more of a safety risk than an aid. Footage shows both a silver BMW Z4 car and a Ford Focus scraping over the humps. The managing agents of the Sturry Road shopping centre say they are now investigating after the concerns of drivers were raised by KentOnline. This week customers at the retail park – which is also h…