Kiwirail staff yesterday declared confidence in their emergency procedures should a train break down in the Rimutaka tunnel.
In the wake of Monday's train breakdown near Featherston, one passenger raised concerns at the lack of an evacuation plan should the train fail in the tunnel.
Johnny Johnson, from Carterton, said he'd been concerned for some time about the safety of the trains when underground. The Rimutaka tunnel, at 8.8km, is New Zealand's second longest.
The Pike River disaster last year had prompted Mr Johnson to look into the issue, and yesterday's hold-up strengthened his concerns.
"If the train breaks down, what happens?" Mr Johnson asked. "If it happens, we've been so ill-prepared for so many things.