Belisha beacon
Concise Oxford English Dictionary © 2008 Oxford University Press:
Belisha beacon /bəˈliːʃə/
▶noun (in the UK) an orange ball containing a flashing light, mounted on a post at each end of a zebra crossing.
– origin 1930s: named after Leslie Hore-Belisha, Minister of Transport when the beacons were introduced.
'Belisha beacon' also found in these Oxford entries:

