The Marshalite was a form of rotary traffic signal that was designed in 1936 by an Australian Charles Marshall (1864 - Dunedin, New Zealand - 3 April 1953, Mornington, Victoria, Australia), founder of the Fitzroy firm of Charles Marshall Pty.
In 1936, an Australian engineer named Charles Marshall created the Marshalite, a rotating traffic signal that would later become a standard feature of urban transportation systems. Marshall was the founder of the Fitzroy-based firm Charles Marshall Pty.