Thursday 10 April 2014

India: Why is "Horn OK Please" painted on the back of almost every truck in India?

The OK was used as a safety measure on the highways.



Most highways in India were single lane. Which meant there was always a risk of running into an incoming vehicle while attempting an overtaking maneuver.

The "OK" was accompanied with a bulb over it, which the driver of the truck would switch on to signal the vehicle behind it that there is no oncoming traffic and hence it was okay to overtake. This arrangement was placed in the center.

One other thing that was written was a courteous 'Horn, please' , with the placement such that the 'Horn' was on the left side and the 'please' (continuation of the same message) on the right.

Gradually the practice of using the bulb to signal other drivers faded away (probably because of the non maintenance of the bulb and also the emergence of multi lane highways), and the OK remained, sandwiched in between the horn and please.

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