 However the HSE report concluded that the Automatic Warning System (AWS) on both trains was probably working correctly, and that the shock of the collision had caused the electro-mechanical indicator to change.In any case, even if the AWS had given a wrong indication this would not have absolved the driver of the Connex train of his duty to observe and obey the signals.The conclusion was that the Train Protection & Warning System might have stopped or at least slowed the Connex train down if it had been installed.