It's a section of track about 100m long called a Timing Loop. It works in conjunction with TPWS & its purpose is to protect junctions on RFR lines where Normal Speed is 130/kph or higher by measuring the speed of the passing train. Each Timing Loop has an Approach Signal indicating if it is active or disabled. If the Timing Loop is active, the Home Arrival Signal for the junction it is protecting will be at STOP & must be cleared by the driver by slowing to 100/kph or less before reaching the T Board, if the Timing Loop has measured the correct speed, the Approach Signal for the Home Arrival will indicate a Reduce to Medium Speed aspect & the Home Arrival will indicate Clear Medium Speed, if the Timing Loop was not cleared but the driver is slowing down the Approach Signal will indicate a Normal Speed Warning aspect & the Home Arrival will remain at STOP, if the Timing Loop was not cleared & the driver is not slowing down, TPWS will make an emergency application of the brakes. If the Timing Loop is disabled the driver can continue at Normal Speed. Timing Loops are also sometimes referred to as Speed Traps.

Yeah you are 💯 correct with T boards applying to both lines. I tried to keep it simple for the sake of diverging moves as that’s when it applies 99% of the time. It really is a stupid system coming from both freight and pass running on it. Being able to resume normal speed after being slowed down never made sense in my mind.

Think I’ll change that in this public video tho. These vids are edited a fair bit from the original I’ve put together. The original has a lot more info in it like the trainees braking points, shut off locations etc. basically all their driving notes which is why I took it all out.

Having just found your really interesting videos I wish you’d left it all in… I’m 73 yo but just got an interest in how the train system works and would love to learn a bit more detail. I’m way too old to be a driver but too interested to be just a passenger. Maybe a voice over would work for interested parties. Am planning a trip to Bendigo soon. Cheers 👍

Thanks mate. Yeah I only made the video for someone I know who’s a trainee at the moment. Only so much you can read about a safeworking system from a book. Much better to see it in action. Figured it may help others in the same situation Can confirm tho (East track down side of sunbury is definitely 115 for a vl at the moment). It definitely never used to be when I was running over it.

The whole line was duplicated before the fast track upgrades.they were afraid that the Velos would hit each other in the tunnels and bridges.

@Hooly Dooly The previous LNP was itching to cancel The Overland and replace it with buses, even so it used to run every day. The Vic govt has been subsidising this train, not sure what the SA Labor govt intend.

At the closed Carlsruhe station at 52:40