California · Evidence Code
EVID §1151: When, after the occurrence of an event, remedial or precautionary measures are taken, which, if taken previously, would have tended to make the event less likely to occur, evidence of such subsequent
What this law says, in plain English
Evidence that safety measures taken after an event would have prevented it is generally inadmissible to prove negligence or wrongdoing.
Read the full statutory text
When, after the occurrence of an event, remedial or precautionary measures are taken, which, if taken previously, would have tended to make the event less likely to occur, evidence of such subsequent measures is inadmissible to prove negligence or culpable conduct in connection with the event.
Verify at the official source: California legislative text
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