A failure that results in the protection provided by the Signalling SystemA series of electrical, electronic, electro-mechanical units brought together to form a system which controls the safe movement of trains. More
being reduced or removed. See Protected Wrong Side FailureA Wrong Side Failure where another part of the Signalling System provides an acceptable level of protection. Also known as a Low Risk Failure. More and
Unprotected Wrong Side FailureA Wrong Side Failure where no other part of the Signalling System provides protection. Also known as a High Risk Failure. More.