Many chemical light sticks provide a yellow-green glow because of the nature of the luminescent compounds. However, some chemical and battery powered models offer a wider array of colors.

The yellow light signalled drivers to slow down and prepare to stop. Potts’s invention, which became the world’s first three-lens automatic traffic light, was installed in 1921 in downtown ...

I was 60 per cent through the intersection on a yellow light when a taxi driver hit the drivers' rear tire/fender of my car causing me to spin out through the intersection.

Fitting with their fan club name HONEY10, the light stick is yellow and features a pot of honey inside. The light stick will be available for preorder through October 15.