You must assume that, as soon as you have a double yellow, that you are following another train at a close distance, so slow down as soon as you see anything other than clear.
That signal is poorly sighted 😂 IRL, we treat every red as red even if you might be following something. No harm in braking really early as you get in more trouble for a Spad than a tiny delay. One of our drivers lost his job for exactly what happened in this video, because if that hadn't cleared it would have been a SPAD
What would you have told your manager if they’d downloaded the data for that journey? “Thought I saw a cow in the four foot but it was just a plastic bag” lol