The Hidden History Behind 'Horn OK Please' on Trucks

Motorists often wonder why Indian trucks display the phrase 'Horn OK Please' on their rear sides. Historically, during World War II, severe fuel shortages led to trucks running on kerosene, which was highly unstable. Vehicles painted 'On Kerosene' or 'OK' warned trailing drivers to maintain a safe distance and honk before overtaking, evolving into the iconic cultural sign seen today.