These can be found on electric powered mobility wheelchairs and scooters. Some use manual or power wheelchairs or electric scooters. All the trolleys are equipped with lifts for mobility aids and wheelchairs. Often, assistive technology such as wheelchairs, walkers and canes may be beneficial. Devices to help with movement such as crutches or wheelchairs may be useful. Bathrooms and kitchens are designed with wheelchairs and walkers in mind. AEC Routemaster buses are not accessible to passengers in wheelchairs and other mobility impaired passengers. The vehicles are accessible with space for four wheelchairs and four bicycles, per vehicle. All MET buses are accessible by citizens who use wheelchairs and other mobility devices. There are special vans equipped for wheelchairs. They are used on lawn mowers, wheelchairs, and wheelbarrows. Stairs are not suitable for wheelchairs and other vehicles. Public transit vehicles are increasingly required to be accessible to people who use wheelchairs. Many modern theaters have accessible seating areas for patrons in wheelchairs. This can include prostheses, orthotics, or wheelchairs.