When architects plan large shops, schools, museums and hotels, they must include in the plan universal facilities such as toilets, handrails and parking according the law.
The term “universal” means that everyone, including elderly people, the disabled like people in wheel chairs, and pregnant females, can use them.
This special parking is installed near the store and the route from the parking to the entrance is flat.
This toilet is universal.It has enough space for a person in a wheelchair.On the other hand, parents like me sometimes use it with their kids.
There are also universal signs which every one can understand because the signs use illustrations.
In short you can travel and live in Japan easily even if you can’t read Japanese.