if event.train and atc_arrow then
	atc_set_ars_disable(false)
	if F.has_rc("S27_Overburden") and train_length() == 1 then
		F.add_rc({"S27_HS_E","S27_DOCK3"})
		return
	end
	step_fc()
	F.add_rc("S27_EXIT")
end