3 ms·It's pretty common in the UK, not as common as mph mind.by cs02rm0 7y agoIt's pretty common in the UK, not as common as mph mind.Svip 7y agoThat's a weird way to write kilometres per hour.ceejayoz 7y agokilometers per hour. Abbreviations using the first letter of each word are very, very common.cs02rm0 7y agoPretty sure they know that and it was a joke about mph.