Which color control indicates to stop the engine?

The color red is universally associated with warning and emergency situations. In the context of machinery, including tractors, red control indicators are specifically used to signal critical notifications, such as indicating the need to stop the engine immediately. This safety measure is essential, as it helps prevent accidents or equipment damage that could occur if the engine continues to operate in a hazardous condition.

Different colors typically serve various purposes: for example, yellow is often used for caution, signaling the need for careful operation; black controls may indicate standard, non-critical functions; and green typically represents safe, operational conditions. Therefore, knowing that red signifies an urgent need to halt operations reinforces the importance of recognizing this color as indicative of immediate action to ensure safety.