Mr Maund, 43, from Leominster, raised the barrier after he mistakenly thought the Manchester to Milford Haven train had already passed, according to Worcester News.
He said he had become distracted after a farmer called him twice to ask if he could take his sheep across the line further up the track.
Mr Maund attempted to lower the barriers and change the signals when he realised the train was approaching, but it was too late.
Judge Melbourne Inman QC said the death could have been prevented if "approach locking" barriers had been installed.
"This tragedy could have been avoided if Network Rail had installed an approach locking system (at the crossing) which would have rendered it impossible for a signalman to raise the barrier."
Video: Woman cheats death after jumping onto tracks to retrieve phone
Investigation launched after man dies falling from moving train