A National Transportation Safety Board report on the probable cause of 2014 crash involving a sightseeing train and a locomotive south of Fayetteville was speed and slick rails.
On October 16, 2014, an Arkansas & Missouri Railroad train lost traction while en route from Springdale to Van Buren, causing it to come to a stop.
A locomotive sent to help that train, struck the excursion train's engine head-on at 24 mph. The speed limit on that section of track was 20 mph.
Officials said 39 passengers and four members of the excursion train's crew were taken to nearby hospitals with non-life threatening injuries.
The report says estimated damage was $178,500.
The NTSB says another contributing factor was informal communications between a train dispatcher and both train crews.