The shape of a sign is crucial to the recognition of the sign. By using the proper shape the message of the sign can be intensified.  

Flat signs are especially suitable for frontal markings which makes them excellent components inside a safety guidance system. They diffuse the light in a 90 degree angle which allows for good visibility within the system.

L shaped signs are the ideal solution for long hallways. The message is well visible in a 90 degree angle from both sides. L shaped signs protrude into the room and therefore are easily recognizable on rather long distances.

V shaped signs diffuse light in an 180 degree angle in the dark so they easily catch the attention of the occupants. V shaped signs are recommended for large rooms and halls.

Ceiling mounted signs convey their message in an 180 degree angle and are primarily used in long hallways close to the exit doors.