high visibility markings on the edges of steps and braille labelling. Increasingly new construction for public use is required by local equality laws to have these features incorporated at the design stage. The same principles of access that apply to public buildings also apply to private homes and may be required as part of local building regulations. Important adaptations include external access, providing sufficient space for a wheelchair user to move around the home, doorways that are wide enough for convenient use, access to upper floors, where they exist, which can be provided either by dedicated wheelchair lifts, or in some cases by using a stairlift to transfer between wheelchairs on different floors, and by providing accessible bathrooms with showers and/or bathtubs that are designed for accessibility. Accessible bathrooms can permit the use of mobile shower chairs or transfer benches to facilitate bathing for people with disabilities. Wet rooms are bathrooms where the shower floor and bathroom floor are one continuous waterproof surface. Such floor designs allow a wheelchair user using a dedicated shower chair, or transferring onto a shower seat, to enter the shower without needing to overcome a barrier or lip. The construction of low floor trams and buses are increasingly required by law, whereas the use of inaccessible features such as paternoster lifts in public buildings without any alternative methods of wheelchair access is increasingly deprecated. Modern architecture is increasingly required by law and recognised good practise to incorporate better accessibility at the design stage. In many countries, such as the UK, the owners of inaccessible buildings who have not provided permanent access measures are still required by local equality legislation to provide 'reasonable adjustments' to ensure that disabled people are able to access their services and are not excluded. These may range from keeping a portable ramp on hand to allow a wheelchair user to cross an inaccessible threshold, to providing personal service to access goods they are not otherwise able to reach. Vehicles Public transit vehicles are increasingly required to be accessible to people who use wheelchairs. In the UK, all single deck buses are required to be accessible to wheelchair users by 2017, all double-deck coaches by 2020. Similar requirements exist for trains, with most trains already incorporating a number of wheelchair-spaces. The EU has required airline and airport operators to support the use of airports and airliners by wheelchair users and other 'Persons