The bright yellow flashing balls are called a Belisha beacon and they are for zebra crossings. https://en.wikipedia.org/wiki/Belisha_beacon https://en.wikipedi

The bright yellow flashing balls are called a Belisha beacon and they are for zebra crossings. https://en.wikipedia.org/wiki/Belisha_beacon https://en.wikipedia.org/wiki/Belisha_beacon Pelican crossings have the button you must press to cross.