9YaTaH wrote:
What a crock, how many Aussie cars had side intrusion bars fitted in 1979...
If we are talking passenger cars... all of them. ADR 29 - Side Door Strength applied to all passenger cars sold in Australia that were manufactured on or after 1 Jan 1977.
https://www.infrastructure.gov.au/roads/motor/design/pdf/29.pdfActually, they may not necessarily have 'bars' fitted inside the doors as the side door strength requirement may have been achieved by the door 'as is'. Generally the bar links the hinges with the latch, and in some cases these are the weak points. If the hinges and latch are strong enough to hold the door in tension in the hole it may pass the side door strength requirement.
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and retro-fitting bars to a car never designed to use them can never be elegant or even SAFE engineering....red tape gone mad

It is certainly safe, or the car is in a side impact anyway, if it is done correctly. That is why it needs to be signed off by a suitably qualified and experienced engineer that is familiar with the ADRs. Granted it is probably difficult to actually 'do' in some doors, particularly doors that are small or that there was never a complying version of, or that have weak hinges or latches or mount points on the body... and unless you can retrofit doors with factory bars easily is probably one of the more difficult compliance hurdles, but in most cases you would not even know they were in there unless you went looking for them.