| Roberts | R. R. | 580 Newcastle Street | Studebaker 25 H.P. | P 715 | Perth Municipality | 1915 |
| Roberts | R. R. | 890 Hay Street | Trumbull 10 H.P. | P 715 | Perth Municipality | 1916 |
| Roberts | R. R. | Kellerberrin | Studebaker 20 H.P. | KE ● 23 | Kellerberrin Road Board | 1917-18 |
| Roberts | R. R. | Kellerberrin | Studebaker 20 H.P. | KE 23 | Kellerberrin Road Board | 1919 |
| Roberts | R. V. | Palmerston Street, Cottesloe Beach | Ford | 5215 | Metro Private Car | 1925-26 |
| Roberts | R. W. | Clackline | Ford Truck | N ● 191 | Northam Road Board | 1926-27 |
| Roberts | R. W. | Clackline | Ford Truck | N ● 191 | Northam Road Board | 1927-28 |
| Roberts | S R. | Merriwa Street, Leederville | Gray | 11620 | Metro Private Car | 1927-28 |
| Roberts | S. | 200 Suburban Road, South Perth | Oakland | 5413 | Metro Private Car | 1924-25 |
| Roberts | S. | 75 Onslow Road, West Subiaco | Dodge | 8203 | Metro Private Car | 1925-26 |
| Roberts | S. | 275 Onslow Road, West Subiaco | Oakland | 8203 | Metro Private Car | 1926-27 |
| Roberts | S. | 275 Onslow Road, West Subiaco | Oakland | 8203 | Metro Private Car | 1927-28 |
| Roberts | S. C. | Kojonup | Rugby | KO ● 161 | Kojonup Road Board | 1927-28 |
| Roberts | Samuel | Wagin | Dodge | W ● 85 | Wagin Road Board | 1925-26 |
| Roberts | Samuel | East wagin | dodge | W ● 85 | Wagin Road Board | 1926-27 |
| Roberts | Samuel | Wagin | Dodge | W ● 85 | Wagin Road Board | 1927-28 |
| Roberts | Smauel | Wagin | Dodge | W ● 85 | Wagin Road Board | 1924-25 |
| Roberts | Stanley R. | Lefroy Road, Kelmscott | Durant | 12638 | Metro Private Car | 1927-28 |
| Roberts | T. L. | - | Dodge | BE ● 86 | Beverley Road Board | 1926-27 |
| Roberts | V. | Trayning | Rugby | KTY ● 79 | Kununoppin-Trayning Road Board | 1925-26 |
| Roberts | V. | Trayning | Rugby | KTY ● 79 | Kununoppin-Trayning Road Board | 1926-27 |
| Roberts | W. | Eujinyn | Maxwell | BK ● 162 | Bruce Rock Road Board | 1924-25 |
| Roberts | W. | Carnarvon | Dodge | CN 39 | Carnarvon Municipal Council | 1924-25 |
| Roberts | W. | Carmel | Chevrolet | DR ● 35 | Darling Range Road Board | 1925-26 |
| Roberts | W. | Eugynin | Maxwell | BK ● 162 | Bruce Rock Road Board | 1925-26 |
| Roberts | W. | Eugynin | Maxwell | BK ● 162 | Bruce Rock Road Board | 1926-27 |
| Roberts | W. | Carmel | Chevrolet | DR ● 35 | Darling Range Road Board | 1926-27 |
| Roberts | W. | 18 Wright Street, Fremantle | Gray Van | 9234 | Metro Private Car | 1926-27 |
| Roberts | W. | Carnarvon | Dodge | CN 39 | Carnarvon Municipal Council | 1926-27 |
| Roberts | W. | Eujynin | Maxwell | BK ● 162 | Bruce Rock Road Board | 1927-28 |
| Roberts | W. | Augusta | Ford Truck | AU ● 93 | Augusta Road Board | 1927-28 |
| Roberts | W. | Carmel | Chevrolet | DR ● 35 | Darling Range Road Board | 1927-28 |
| Roberts | W. E. | Nungarin | Ford Truck | NA ● 41 | Nungarin Road Board | 1927-28 |
| Roberts | W. G. | Carnarvon | Dodge | CN 4 | Carnarvon Municipal Council | 1922-23 |
| Roberts | W. G. | Carnarvon | Reo Truck | GU ● 29 | Upper Gascoyne Road Board | 1924-25 |
| Roberts | W. H. | Bulimba Road, Claremont | - | CL ● 113 | Claremont Road Board | 1919 |
| Roberts | W. H. | 128 Cambridge Street, West Leederville | Oldsmobile | 5901 | Metro Private Car | 1924-25 |
| Roberts | W. H. | Carnarvon | Dodge | CN 39 | Carnarvon Municipal Council | 1925-26 |
| Roberts | W. H. | Dowerin | Stewart Truck | D ● 150 | Dowerin Road Board | 1926-27 |
| Roberts | W. H. | 128 Cambridge Street, West Leederville | Oldsmobile | 5901 | Metro Private Car | 1926-27 |
| Roberts | W. H. | Dowerin | Oldsmobile | D ● 111 | Dowerin Road Board | 1927-28 |
| Roberts | W. H. | Dowerin | Stewart Truck | D ● 150 | Dowerin Road Board | 1927-28 |
| Roberts | W. H. | Dowerin | Chrysler | D ● 238 | Dowerin Road Board | 1927-28 |
| Roberts | Wm. | Dalwallinu | Car | DL ● 2 | Ninghan Road Board | 1917-18 |
| Roberts | Wm. | 19 Wright Street, Beaconsfield | Gray | 12199 | Metro Private Car | 1927-28 |
| Roberts | Wm. | 19 Wright Street, Beaconsfield | Gray Wagon | 9234 | Metro Private Car | 1927-28 |
| Roberts & Kelly | - | 22 Albert Street, West Perth | Reo Bus | 3636 | Metro Hire or Trade | 1924-25 |
| Roberts & Sons | - | 275 Onslow Road, West Perth | Chevrolet Van | 9514 | Metro Private Car | 1926-27 |
| Roberts & Sons | - | 275 Onslow Road, West Subiaco | Chevrolet Van | 9514 | Metro Private Car | 1927-28 |
| Roberts Bros | - | Fitzgerald Street | Ford Lorry | N 189 | Northam Municipality | 1925-26 |
