"they" will open a lane in this country if at all possible as well. Nobody is keeping a large section of a major motorway closed for hours for shits and giggles.
In this particular case, if the reports of someone threatening suicide are accurate, it wouldn't be possible. What would you suggest, someone with a loudspeaker saying "Don't jump love, you've got so much to live for....but if you do jump can you do it over lane 1 and 2 and not lane 3 because we're going to reopen that one?" 🙄
Same with the suggestions like having access gates to the other side of the motorway to send people that way - great but then you will still have to stop all the traffic coming in the other direction for several hours while you get that set up. Which means tens of thousands of cars being rerouted through areas not set up to handle that much traffic, leading to equal delays and possibly more accidents, just in the other direction. Same with turning people around - again you still have to stop oncoming traffic and manage it safely.
All of these solutions take a lot of manpower and anyone who is on MN or ever watches the news should be aware that we don't even have enough emergency personnel to attend 'normal' day to day incidents. Everyone complaining that there wasn't an ambulance to send for their cousin's stroke or their burglary shouldn't be surprised that we don't have tens of police officers available to deploy to re route a major motorway within minutes.
I'd love to know if all the "they don't put up with this malarkey in other countries" can explain exactly what first hand experience they have and what these "other countries" do better?
In most cases it's not that the omnipotent "they" are just sitting back shrugging and not giving a fuck about people stuck in their cars, it's that, in a country so overpopulated where the roads are so busy, there are no quick and easy solutions.