"We want these avoidable incidents to stop," he said.
"Not only do they cause immense harm to the people involved but they also have a terrible impact on our locomotive engineers who drive the trains."
Cairns said near-collisions often happened when people drove around barrier arms to try to beat trains.
But he was gratified that police were prosecuting more motorists for unsafe actions at level crossings, such as queuing across them.
Anyone caught driving or walking across a level crossing when there is a risk of colliding with a train can receive an instant infringement notice of $150 or a court fine of up to $20,000.
Fines of up to $1000 can be imposed for other offences such as passing a vehicle at or within 60m of a level crossing.
The Automobile Association is supporting the rail safety message warning drivers that trains cannot stop suddenly or swerve to avoid a crash.
Spokesman Mike Noon said it was too easy for motorists to misjudge the speed of oncoming trains.
"This is extremely dangerous as large moving objects like trains can often look like they are travelling slower than they are."
Mr Noon also warned drivers not to blindly trust the automatic alarms.
The Chris Cairns Foundation has also started an educational website this week: www.railsafety.co.nz.