The Department of Conservation's accused a handful of Tongariro Alpine Crossing shuttle operators of putting trampers at risk

The operators are accused of ignoring bad weather advisories and taking trampers to the crossing in potentially dangerous conditions.

A shuttle is now the only means of access to the crossing following last month's fires - but that's on the condition drivers cancel bookings when bad weather advisories are in place.

DOC has emailed the shuttle drivers threatening to remove their permissions if they fail to comply with the rules.