The world is tough place to navigate in a wheelchair. But finding ramps and elevators can be easier thanks to this handy map app that anyone can edit.

It’s called Wheelmap, and it tells you the accessibility status of public places all over the world. It’s free and grades locations in a traffic light-style, red-yellow-green scale of wheelchair accessibility. Developed by German nonprofit SOZIALHELDEN e.V., it’s now celebrating five years since launch. Since 2010, users have added nearly half a million entries across the globe.

“Accessible” means you can enter the place without steps, and that all rooms inside a building can be entered without steps, as well. “Limited accessibility” refers to entrances with a max of one step no higher than seven centimeters, and that the “most important rooms” can be entered without steps.

Wheelmap launched back in 2010, and since then, has become available in 22 languages. It’s available for both iOS and Android users.

READ MORE: This Massive, Open Source Map Makes the World More Wheelchair Friendly | Gizmodo