Traffic Light Rating System - Performance Monitoring

Performance Monitoring

In many factories, different stations on the production line(s) are equipped with factory monitoring and control systems; attached to such systems is a 'traffic light' status indicator which is generally visible from many places within the factory. Green typically indicates normal levels of production; amber indicates that production has slowed (or attention is otherwise warranted); red indicates that production has stopped or the line is down.

In the British Civil Service and other departments of the United Kingdom government, traffic lights are used as a coding system for good or bad performance - usually known as a 'RAG rating'. For example in relation to the workload performance, red would mean inadequate, amber would mean reasonable, and green would mean ideal. The letters R, A and G are used in addition to swatches of colour, so that the system can be used by colour blind readers.