Does Jubilee line uses ATO in the sidings?

Yes for mainline sidings such as Wembley, Willesden and West Hampstead. No for Stanmore sidings due to the possible presence of staff on the walkboards (trains switch to and from ATO at the reception road).

I don't see the point in using ATO in sidings If i were the driver i would not trust ATO into the sidings. The central line always drives manual in sidings and i assume the victoria line is the same.

It is possible to enter the sidings (well loops) at Woodford, Debden and Newbury Park in ATO, but not exit them in that mode.

I'm not sure why you wouldn't trust ATO in sidings. It is no different to a train in ATO mode driving into a dead end platform like Ealing Broadway or Woodford bay road platform.

I know what you mean but if they cant drive manual in sidings what about their driving skills?
Am sure West Ham to the Depot is Manual surely? It is strange when I get on the Jubilee line thinking its being driven by a computer! Not the driver!

also DLR has automatic ones - you may seen in use in bank where train captain usually oversees the automatic reversing in ATO mode
in that video earlier - its looks like a automatic train slding where driver has switched on a speical computer that commands the train from platform to sliding yard beyond once staff walks across to other platform and turns the key to call train from sliding to driver - once train arrives - stops at headwall with driver door visible and driver opens the cab door and turns train back to manual mode its very strange but a saving time for drivers to change ends

I suspect the idiosyncrasies exist because of differing agreements and proceedures arranged at the time of each conversion. Sometimes theres just no justification for changing something if it isn't not working, you know? Every change costs money and time to organise, arrange and implement so unless the change provides a significantly beneficial outcome, whats the point?

Put another (somewhat contentious way), granted a driver needs to keep up their familiarity for the road and stock, but on an automatic railway this will be primarily for when running under some kind of failure; ie, (hopefully!!) rarely. If the most common (disproportionately) bit of manual driving is actually the practice for if one needs to drive manually, then whats the point of justifying it as a compulsory and regulated practice?
Drivers are required to sign the route and stock regularly, this implies they are familiar enough with whatever circumstances they find themselves in anyway. Add to that the fact that in the real world failures do happen a fair amount... people end up with the experience anyway.
Also surely theres lee-way at slack times for a driver to request to go into PM mode if they wish; read a story in the Metro not too long ago about a driver on the Jubilee who asked to go into PM because they saw a deer running near the tracks ahead, it was off peak, and they only had a couple of passengers aboard.

So, one way or another, things work out

An hour in the simulator every month or so?

Depends on the circumstances and rules. If a driver had chosen to drive in PM for no good reason and then went on to overshoot a signal or platform, they might get a talking to!

Dont forget door open and door close too!! The Victoria Line is equally as boring, and they have no planned PM driving (except depot to Seven Sisters and back at the moment, though this will be auto in the future).

But I don't get why the Jubilee line does not?
I often thought on the Jubilee line when trains come in slowly to stations and braking gradually it would be manual. No wonder some drivers prefer to drive in ATO as they probally have lost their confidence to drive full speed they will only be used to driving at low speeds in depots.

I get the jubilee on most days on my way to work and I'm pretty sure from approach speeds into stations that trains for the most part are not being driven manually. An Instructor Operator who's now does testing says drivers on ATO lines are losing their driving skills in terms of normal speed operations.

I think over 95% of all runs are in ATO all the time. Reason for the massively different approaches to station stops above and below ground is down to the braking rates set on the control system. Adhesion issues underground are pretty non-existant, whereas above ground are more problematic, so the system has different braking rates set at start up, which are usually further manually adjusted above ground to prevent slip/slide. Even with the more gentle braking, the trains still struggle sometimes in those 'greasy' conditions, but in the dry seem very slow for no good reason. I think this is because it is not easy to adjust the braking rates, so they tend to be left at 'very gentle' above ground all the time?

I haven't noticed slow approaches to Canning Town or West Ham. Tubes seem to be allowed to brake harder than NR trains in general anyway !

I was wondering with the snow yesterday would the Jubilee line of drove manually with it being snowy?
Or would it be in ATO still?