Okay, so have I hit the nail on the head here? Does the common sense approach work in my favour?
I've been driving for more than a few years now and the entire rulebook can sometime make little to no common sense. What is important is that I follow those rules, irrespective of if I believe they are right or not. There are times when common sense goes out the window and leaving a burning train full of people is a anathema to everything I believe in. However, the rules are there for a reason. You have no communication and there are potentially trains running on adjacent lines at anywhere between 30 and 100mph. If you evacuate people onto a running line then you are making the situation worse and putting those people in further danger. In third rail land you have a live line with 750v of electric. Can you see the bigger picture building now ?
Get the juice off, protect the line, get help. The first rule in an emergency is to get help. Have a look at some RAIB reports and see how clinical they are and how important following the rules are. This is why people say to emphasise following rules. Even if they are unpalatable. If you look at the RAIB report for the Chilham derailment you can see a prime example of a Driver making a decision of good common sense but then the RAIB deciding that is actions could and maybe should have been different.
There’s no way I would leave a burning train with 1k passengers and other train crew on board to protect the line.
Then this job isn't for you. The mentality of blindly following the rule book is a trait of being a Driver. There is a shift away from it but the overarching mantra is follow your training, follow the rules. Again, this is why people always push this during an MMI/DMI questioning. However, people do not see where that can be a trap. Do you follow the rules but potentially put others in danger or do you break the rules because you prioritize something different. Do you run into a burning building or do you stay back and call the fire brigade ? How you balance that and how you deal with that is what they are looking for. This is the kind of situation that throws a candidate.
Also, isn’t part of the role of a train driver to protect and prioritize the safety of passengers on board? I assume this is designed to catch you out?
There is no trick question here and nothing is designed to catch you out. I know my job to the letter. I have to follow rules, procedures, policies etc. What I also need to do is understand what is going on. Look at the Peckham Rye incident. Passengers were evacuated onto a live running line. It was barely significant but it was enough to trigger an RAIB report and the Drivers actions were considered to be very wrong. From an outside perspective the Driver acted in the best interest of the passengers. Internally he failed to protect the passengers he was trying to help.
They truly are looking for so much more. They are looking for people who have certain personality traits, they want people who are mentally prepared to make crappy decisions, they want people who are prepared to challenge everything they believe in. The reasons why they keep poking at you during the questions is that they are delving deeper into how you are thinking and what you are doing. They want to know why you did something and how you felt about it.
As I say, look deeper at your answer and think more about what you did, how you felt, what you might have done different, why you did something, what mistakes you made etc.
My first answer was dismissed, my second was reporting a fire on a country lane, that was also dismissed. I had to come up with a 3rd answer on the fly. It wasn't something that I considered to be an 'emergency' but it was filled with examples of what I did, and every tangent she took me on pushed me further. I had to justify everything I did, regardless of if it was right or wrong.