Yellow Trolly - BN Class Trolly Class: BN* * Trailers marked (*) are classified as Rail Mounted Tools or Tool Carriers for the purposes of Section 1 of Appendix 1 of the General Instructions. Number: 1, 2 & 3 Name: - Description: Flat top dummy Load Capacity. - Goods : 1 ton (1 tonne) - Persons. ---Puffing Billy Railway - Narrow Gauge Track maintenance Vehicle - BN Class TrollyYellow Trolly - BN Class Trolly - Flat top dummy made of wood and wrought ironpuffing billy railway, pbr, rolling stock , yellow - trolley, bn class trolley, trolly, trolley