The onus is therefore on the retail trade and their suppliers to do all they can to ease the load on customers. Shopping trolley manufacturer Wanzl has looked long and hard at this whole area and come up with a new idea - the VAS steering aid. As the load in the basket increases, the two front swivel rollers, which are attached to the VAS system, tilt backwards. The loaded trolley then acts as if fixed castors were installed at the front. Dr.-Ing. Rainer Eckert, Head of Technology and Development at Wanzl explains: The effort then needed to steer the trolley is reduced by up to 70 percent, and there is a tangible improve-ment in straight-line stability, particularly on uneven surfaces in car parks. The trolley can still easily be moved sideways, however. The advantage of the VAS system is that it is only activated when the shopping trolley is loaded, in other words when the customer actually needs help with steering. This innovation certainly offers very practical help in an everyday situation - shopping is after all an activity that at least one person from a household regularly engages in. A survey conducted by one of Germany´s leading consumer research associa-tions, Gesellschaft für Konsumforschung (GfK), found that a customer visits a food store 8.4 times per month.