If you heard me say, ‘red light, green light’, you’d be forgiven for thinking I was talking about the infamous Squid Game challenge. But no, I’m referring to my two favourite LED colours ...

The yellow light would not come into play until the 1920s. William Potts, who was a police officer in Detroit, is credited for designing the first three and four-way colored traffic lights.

Texas law specifically states that a solid yellow light means the termination of a green light and that a red light is imminent, but it doesn’t outline whether to stop or speed up.