Check (pattern) a board used for playing checkers and chess, and in heraldry. The check pattern has a number of symbolic meanings. In auto racing, the chequered flag is displayed at the finishing line to signal that the race has finished. It originates from the "checkers" who watched the finishing line and checked when cars had finished the race. They began using chequered flags to identify themselves. In some countries, the check pattern has become a symbol of the police. Known as "Sillitoe Tartan", it was first used in Glasgow in the 1930s and was inspired by a pattern worn by some
British Transport Police When policing the Channel Tunnel, BTP constables have the same powers and privileges as members of Kent Police when in France, and will also be under the direction and control of the Chief Constable of Kent. BTP uniforms are similar and the rank system identical to other British police forces. The distinctive black jerseys with a black and white chequered pattern on the yoke have been replaced with black Windstopper fleeces. Officers in England, Wales and Scotland have now adopted the same uniform as the Scottish forces. A BTP constable does not lose the ability to exercise his powers when