We finished a project for the headquarters of a big company recently. The bike parking area is beside the roadway. So there will be lots of cars driving on the aisle. It will be safer both for the driver and the end-user if the upper racks are folded if there are no bikes on the upper racks. We suggest using the foldable vertical lifting upper racks. The customer is very satisfied with the innovative product. Thanks to our installation team finishing the project on time.