Of course, my opinion on DOO is going to be based very differently from most others.
I am very strongly against DOO entirely, and even more so with the cutting back of platform staff dispatching trains which I firmly believe is an even further dangerous move.
Thing is, a standard 12 car train could carry up to.. 1000 people fully? Seating and standing. Probably more squashed in and full & standing.
One person... to look after 1000. ONE PERSON... if things go wrong or there is an emergency, is solely responsible for the safety of 1000 people. If someone happens to that driver, being the only member of staff on the train, there is no one else there to help or do anything.
If the driver left a failed train to wait for the assisting one for example, there is no one on board to monitor the passengers or situation. If someone decided to jump out and others follow suit (which we know does and has happened yefore).. How is anyone going to know about it till a call from another driver comes through saying "I've just mowed down 20 people on the track!"
In a fire, one person cannot block all lines, put out an emergency call, get the power turned off, and at the same time reassure passengers and manage an emergency evacuation.
In an emergency or a disaster, if the driver isn't out of action or unconscious, you've again only got one person to manage the Emergency looking after their passengers, their train, and also stopping other trains from approaching the area as well as getting help. At least with another safety critical person, they can assist if there is a problem (be it emergency, disaster, or even just a train failure whilst helping to try and sort the issue!)
Then we come to DOO operation.
DOO cameras on trains are rubbish. No two ways.
They are fine on a perfect day with not too many people. But weather conditions, sunlight, low light, too many people, faulty cameras (happens often!), or the fact some go out the second a trains motors engage... No. Absolute rubbish.
Platform DOO monitors fair not much better really. They still have the same issues.
DOO Mirrors, ok for short trains on a quiet station. Though in the Peak you try looking so many feet ahead into a big mirror, and see all the way down the train on a packed platform. No. It's not safe and takes time.
At least platform staff can fully see up.and down a train and make sure everything is clear at all times.
A guard can also do the same, and position themselves in a safe place and be assisted by platform staff. Plus they can stop the train leaving if something happens (and this happens daily somewhere. Even if it is minor!).
Then comes security. Who looks after passenger safety on-board with DOO? Might be lucky to have some revenue staff maybe. That's about it. No guarantee of it though. Who do you turn to if you're not feeling safe, find something wrong, or there's trouble? Nope, no one.
I stand my ground in saying and firmly believing DOO is a totally unsafe practice at all times. You're a fool to believe otherwise and the DFT continue to endanger lives of everyone by pushing it forward.
To say it is "Tried and tested and proved to be safe" is an absolute lie. Ots proven to be unsafe on many occasions, but ithat is ignored.
DOO is only safe up until conditions change or something goes wrong.
DCO/DGO, or even having some safety critic person on-board at all times, every passenger train, keeps things safe for when conditions do change or things go wrong.
Also, typing on my phone isn't easy. I expect many typos or spelling mistakes about