All this talk about motorway accidents has reminded me of all the ones I have seen over 40 years.
The worst though was only a few years ago on the M25 just past the M11 interchange, and I wish screens had been deployed then.
A white Ford Escort convertible had just run underneath the back of an articulated lorry's trailer on the hard shoulder, with the trucks driver running back to see what had happened. All I could focus on, late at night, on an empty very well lite section of M-Way, was a man, or rather his head, hanging down on the side of his car's door with the frames of the trailer right on top of him. It was an horrific sight, and although I have seen the aftermath of many ghastly accidents, this one really hit me bad and for the next few miles I was in shock and feeling very sick. It was awful.
In that case any screens would have come too late to save my feelings, and no doubt many others until the emergency services arrived. But, they would have saved many others seeing the sickening sight later.