So it looks like the London tube drivers are striking again!

@meJess some lines are 'driverless' just like the Docklands Light Railway. However the Docklands Light Railway trains still carry a driver on every service, who is there to intervene should the automatic equipment, or other on train equipment fail and is there to manage emergency situations. Which is exactly why Tube trains will always need to carry people trained to driver standard.

@Philth DLR do not always carry drivers, I have been alone on those trains.

@meJess all of the available information I've seen about DLR is that there is always a safety critically trained member of staff on board. These people are not referred to as drivers but instead 'train attendants', and have access to the manual driving controls located beneath a cover, and (according to all of the information I've seen) are on board every train to intervene in case of breakdown, malfunction, or other emergency.
It is a point frequently overlooked that DLR was designed from the outset to be 'driverless' and to that end, as many hazards as possible were designed out from the outset. For example the gaps at the platforms are very small. This is in contrast to the mainline railway operations where many platforms are on a sharp curve which leads to a large gap, as well as being served with trains of different floor heights which also leads to an increased gap - the gap being the current biggest risk of fatality on the rail network. On the mainline routes, certain types of train are banned from certain platforms as the combination of floor height, body length and door positioning make the gap too large to be safe. Again, it's the driver's fault for accepting a 'wrong route' should the signaller route the train into a platform for which it is prohibited.
It's surprising what even regular passengers miss in terms of detail, only a few weeks ago I found myself in argument with a passenger who claims to have been given misleading information about service disruption "what do you mean this train isn't allowed on that route, I was on one exactly like this yesterday and it got there ok" - they were on board an electric train, referring to a route which is not electrified. "Don't you try and baffle me with science, I know what I saw" Er ok then, I'll just let you stubbornly sit here and miss your connection then.

@Philth ok,but there is no separate drivers cab on DLR trains so if I am the only one on board there is no driver. This has happened on several occasions.

@meJess you are entirely correct in that there's no separate driver's cab. As I've said earlier, the manual driving controls for use in an emergency are beneath a fold down cover. There is no requirement for the train attendant to be in this position during normal operation, they only need to occupy the space when something's gone wrong.
As for your claim that it is commonplace for DLR trains to run without a member of staff on board, this is a reportable safety incident which, so the link suggests, is something which would normally warrant investigation, ie it is not a planned or intentional event and counts as a violation of safety procedures.

https://londonist.com/2007/11/unmanned_train

@meJess "Tube trains don't need a driver" ok then. It's true that on a good day they are capable of running automatically. But there aren't that many good days, ya know. On a good day, football stadiums, other entertainment venues even churches don't need stewards to help with crowd management or be there in case of emergency. On a good day, most of a ship's crew aren't required. On a good day, flight attendants aren't really earning what they're actually paid for: to respond when things go wrong. My job as a train driver in another part of the UK outside of London *on a good day* isn't that difficult. Except that there aren't that many good days. Once I got the hunch from the body language of a young lady who was waiting at a level crossing.... Something just didn't seem right so I stopped and called it in. The train behind mine was cautioned; she was found sitting on the track with a suicide note. My actions saved not only her life, but also major disruption. But hey, like you say, do away with drivers. No. This is why the human element including the ability to take control of the trains when 'automatic' systems fail, will always be in place. Or to put it another way, if you're seriously suggesting that it's OK to have up to 1000 people or more, locked inside a metal box in 12 foot wide tunnels over 150 years old, lined with live rails conducting lethal voltages with no proper inbuilt escape routes (that is to say for the avoidance of doubt, an extremely hazardous environment) without a single trained responsible person on board to help out if something goes wrong, then you're living in fantasy land. It's pretty easy to make a train automatically start and stop at stations, yes. But incredibly difficult to design in all the other systems to do what a driver also performs as part of their role. Design me an automated system which can tell, accurately, whether the train has hit a person, or just an empty sack that's blowing around. Which can tell the difference between a noisy rail joint or a broken rail. Which can tell between lineside signage or a fallen tree or piece of equipment. Which can tell between another train with a bright light, or arcing electrical equipment. Which can properly detect snow, and then modify use of the brake system to accommodate this (you didn't know there is a whole set of rules for driving in snow, to protect the brakes from freezing up?) This time of year (it's leaf fall season) we're approaching stations and examining the colour of the rails in order to make a judgement about how slippery the rails might be, therefore when we need to start breaking. Observing the lineside environment for early evidence of flooding (which can easily wash the track away) landslips, unsafe trees (both of which can cause derailments).
Yet here you are, insisting that DLR regularly runs without a trained member of staff on board (it doesn't) and saying it's ok to do without the only remaining person on board who is trained to detect dangerous situations and take the most appropriate action.