TrackSafe NZ manager Megan Drayton said one of the two vehicle collisions in August 2015 was at the TYDuncan Rd level crossing in Oamaru, and the other at Lincoln St in Hampden.
Other incidents in the past year included a near miss when a tractor and trailer crossed in front of a train where a collision was avoided by just a few metres, and three near collisions with light vehicles, all at crossings where flashing lights and bells were operating.
There were 17 reports of people trespassing on railway tracks, and of those three were classified as near misses.
That included children on tracks at a bridge east of Green Island, and a teenager with headphones walking on tracks.
In the past five years in Otago, there had been 16 collisions with light vehicles, and 44 near misses.
The figures came from crash data taken from the NZ Transport Agency crash analysis system, and the results showed inattention was the major factor in more than 40% of serious and fatal injury collisions at railway level crossings.
KiwiRail chief executive Peter Reidy said a national safety campaign launched for the summer was intended to remind New Zealanders to stay alert at level crossings over the holiday period.
"While people are heading off on holidays, the trains are still working hard.
"If you're enjoying your drive, please stay switched on and focused.''
He said when approaching railway tracks, drivers should always obey signs and make sure the exit beyond the tracks was clear before they crossed.
"Pedestrians are also reminded to act safely around the rail corridor this holiday season.
"There have been more than 250 reports this year of people illegally crossing railway tracks and around 60 of these were classified as a near miss.
"People should only cross tracks at designated pedestrian level crossings where there are warning signs and signals to help people cross safely.''
Mr Reidy said trains were quiet, moved faster than they appeared to, and took a long time to stop.
Ms Drayton said the 11 vehicle collisions at level crossings in the past year was down on 18 the previous year.
But, he warned, people should not become complacent.
"If you see railway tracks, assume there will be a train.
"No matter how well you know the level crossing, trains can come at any time and from either direction.''
The safety campaign involved nationwide newspaper and radio advertising and social media promotion.
