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
Police vehicles in the United Kingdom systems. Although both observers are often police officers, the pilot does not engage in any police activities and is usually not a police officer. Police forces whose area includes significant waterways often include marine support units. Not only do these units police the waterways, but they also maintain a capability for waterborne rescue, usually in cooperation with HM Coastguard. Battenburg markings Jam sandwich (Phased out of London Metropolitan Police Service in 2012) Police vehicles in the United Kingdom The 52 police forces in the UK use a wide range of operational vehicles including compact cars, powerful estates and armored police