 Only "Y" class diesels could haul the freight services due to the deterioration of the track condition, which resulted in the derailment of T401 on 5 August 1980.The Yarra Valley Railway currently run a Walker railmotor from Healesville to the Tarrawarra Winery, crossing the Watts River, under the Donovan's Road overbridge and through the tunnel.There are plans in place to improve the line from Healesville to Tarrawarra to a standard suitable for the running of Rail Motors, with further goals being reconstruction to Yarra Glen.