Among non personal injury experts there has been some confusion regarding the difference between Static versus Dynamic coefficient of friction.

Here are the basic differences:

Static coefficient of friction is a test based on the subject slipping from a standing position, i.e. the man or women were standing still, started to move, and slipped.

Dynamic coefficient of friction is based on the subject slipping while in movement, i.e. the man or women were walking, running, etc. and suddenly slipped.

Generally speaking a Dynamic coefficient of friction test is more accurate because most slip and fall accidents occur while the subject was in motion, i.e. walking, running, etc.

Our state of the art field testing equipment, the Regan Scientific BOT 3000E, can do both but in 99% of the time we test Wet Dynamic Coefficient of Friction based on the ANSI A326.3 standards.