An inquiry has found a woman endured "almost incomprehensible" suffering for three days.
Lamara Bell, who was 25, lay injured beside her dead boyfriend following a car crash.
She passed away in hospital.
28-year-old John Yuill died after their vehicle left the M9 near Stirling in July 2015.
An investigation's found "organisational failure" in call handling by Police Scotland meant they weren't found.
That's despite officers previously being alerted.
Tributes after Falkirk fan dies
Data shows number of Stirling parking tickets issued
50 alcohol-related deaths in Forth Valley last year
Determination date changed for Larbert data centre
Drop-in session for new Falkirk Town Hall