Authorities knew for years that some trucks had a handbrake so sensitive it could be dislodged simply by shutting the cab door - in fact, since just after a man was crushed to death in 2010.
But they allowed the trucks to stay on the roads.
During this time a second person was killed, and there were multiple near-misses when handbrakes failed.
Photo: 123rf
An expert's report has just been released to RNZ - Phil Pennington has been going through it.
