Who invented the first electronic crosswalk sign?

Question

Who invented the first electronic crosswalk sign?

Answer 1

This is all that I could find for the moment concerning electronic crosswalk devices.............

Belisha beacons were invented in the UK in 1934 and are now used extensively in the UK and elsewhere in Europe.

A Belisha beacon consists of a white-and-black striped pole with a plastic orange globe the size of a soccer ball at the top.

This beacon is placed at each end of the crosswalk and flashes continuously.