Re: windscreens...

I used to work in a haematology /blood bank dept in the 1970's. I've seen the result of unbelted occupants in older cars that have had a head-on or full-scale roll-over crash. Have you ?

Does laminated glass protect the occupants any more than toughened glass if they hit the screen (eg because they are not wearing a seatbelt)? I believe the main benefits of laminated are a) doesn't break into opaque glass fragments, so driver can still see through broken screen, b) less chance of flying objects (eg stone chips) penetrating the screen, as happened in the tragic case of the son of footballer Cyril Knowles.

You?re still confusing issues. I was responding to the suggestion that DIY repairs were a bad idea because of the risk of screens failing at speed. As I pointed out, this doesn?t happen with laminated screens, only the old toughened ones. When Martin made his comment about ?fail as a shower of glass? he was talking about putting one?s face through the screen or when struck by a stone?

You chose to bring in the irrelevant fact (to DIY repair) that screens can make a mess of your face if you stuff them into your screen.

Tim

A toughened screen is much stronger. Your head hitting that might result in severe damage to the skull. If it didn't shatter in the crash before your head hit it.

A laminated screen might 'give' somewhat so not crush the skull, but the very sharp shards cut your throat instead.

Neither is recommended.

But on a car before seat belts, the steering column likely crushed your chest anyway - before your head hit the screen.

In the 20s a typical outcome was steering column enters chest with horrific results. When did they become collapsible?

NT

I was thinking that too. I'd say about the same time as seat belts arrived

- but on expensive cars first.