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A brief histrory of the world famous ISA square blue symbol

International Symbol of Access

This is a sign that is often seen in buildings and facilities where access for disabled wheelchair users has been upgraded and improved. It demonstrates that barriers (i.e. steps) that may have made entry difficult for people with a mobility disability have been removed.

The International Symbol of Access which is also referred to as ISA, is a square sign that has a blue background with a symbol in white of a disabled person sitting in a chair. The ISA is also known as the (International) Wheelchair Symbol.

The International Symbol of Access sign can also be found outside of buildings for instance to highlight parking spaces for disabled badge holders.

International symbol of access

History of the ISA
The symbol was first designed by Susanne Koefed in 1968 and introduced in 1969 as a sign to indicate that certain buildings are suitable for wheelchair users.

Today the symbol is one of the most widely recognized disability signs in the world.