RFI Rete ferroviaria Italiana TEcnofer TDC 500 NVR IT-RFI 300004-3. This motor car is a "Treno Diserbatore" i.e. a small unit used to spray herbicide along the line (which chemicals are stil allowed?). Bologna Centrale Station. 23/04/2022.

Photo by Guido Allieri (guido@allieri.com)- www.allieri.com