Wait for the ATSB/TSV report. We don't know yet if the driver stopped at the level crossing or not.
However, there are a couple of things we do know.
Phelps Rd crosses the railway line at an angle of about 30 or 40 degrees from a right angle. There have been several heavy road vehicle/train accidents over the last decade or so in Victoria at similar level crossings. The first I am aware of was Saleyards Rd, Benalla, in October 2002 in which the driver, fireman, and visitor on the locomotive were killed and K183 wrecked. More recently, there was a collision at Lake Charm in February 2014. There are probably others.
In all these cases, but particularly the last one, the TSV investigator identified the design of the tractor cab as a causal factor. Simply put, the view from the driver's seat of a heavy road tractor to the left is extremely restricted. In particular, it is very hard to see things to the left and rear. Typically, the only window is in the left hand door, this is a long way across the cab from the driver's position, and is mostly forward of the driver.
Have a read of the Lake Charm report for a good discussion of the issues (http://www.atsb.gov.au/media/5770742/ro-2014-016_final-report.pdf
) In particular, read the discussion of viewing angles at p13. Then consider how much blame you could fairly ascribe to the driver at Lake Charm.
The truck driver from the current accident is in a critical condition. Irrespective of whether he was at fault, I hope he survives, and doesn't have ongoing health issues.