| Robbins | Agnes A. | Thomas Street, Nedlands | Columbia | 7490 | Metro Private Car | 1927-28 |
| Robbins | F. J. | Thomas Street, Nedlands | Chevrolet Truck | 12784 | Metro Private Car | 1927-28 |
| Robbins | J. H. | 1131 Hay Street, Perth | Dodge | 10267 | Metro Hire or Trade | 1926-27 |
| Robbins | J. H. | 1131 Hay Street, Perth | Dodge | 4090 | Metro Private Car | 1927-28 |
| Robbins | J. H. | 1131 Hay Street, Perth | Dodge | 10267 | Metro Hire or Trade | 1927-28 |
| Robbins | L. | cnr Prince Road & Thomas Street, Nedlands | Chevrolet | 5754 | Metro Private Car | 1924-25 |
| Robbins | L. | Cnr. Prince Road & Thomas Street, Nedlands | Chevrolet | 5754 | Metro Private Car | 1925-26 |
| Robbins | L. E. | 45 Helena Street, Bassendean | Chevrolet | 6958 | Metro Private Car | 1927-28 |
| Robbins | T. H. | Parkerville | Ford Wagon | 16014 | Metro Private Car | 1927-28 |
| Robbins | W. A. | King Street | - | VP 1 | Victoria Park Municipality | 1915 |
| Robbins | W. A. | King Street | Ford 25 H.P. | VP 1 | Victoria Park Municipality | 1916 |
| Robe River Pastl. Co | - | Yarraloola | Ford 15 H.P. | AS ● 9 | Ashburton Road Board | 1917-18 |
| Robe River Pastl. Co | - | Yaraloola | Ford 15 H.P. | AS ● 9 | Ashburton Road Board | 1919 |
| Robe River Pastoral Co | - | Yarvaloola Station, Ashburton | Ford 16 H.P. | ARB 6 | Ashburton Road Board | 1915 |
| Robe River Pastoral Co | - | Yaraloola | Ford 16 H.P. | - | Ashburton Road Board | 1916 |
| Robe River Pastoral Co | - | Fortescue | B.S.A. Motorcycle | R ● 7 | Roebourne Road Board | 1922-23 |
| Robert | Clara Eden | Armadale | Morris Van | A-K ● 156 | Armadale-Kelmscott Road Board | 1927-28 |
| Robert | E. C. | - | Essex | GO ● 123 | Goomalling Road Board | 1926-27 |
| Robert | E. C. | - | Essex | GO ● 123 | Goomalling Road Board | 1927-28 |
| Robert | G. M. | Mount Baker | Hupmobile | PL ● 7 | Plantagenet Road Board | 1924-25 |
| Robert | Herbert | 89 Adelaide Street | Buick 25 H.P. | F 61 | Fremantle Municipal Council | 1917-18 |
| Robert | Mrs E | 16 Saleham Road, Victoria Park | Overland | 4815 | Metro Private Car | 1927-28 |
| Robert Harper & Co | - | 14 McDonald Street | Douglas 2¾ H.P. Motorcycle | KMC 25 | Kalgoorlie Municipality | 1916 |
| Robert Jones & Co | - | Perth (traveller) | B.S.A. Motorcycle | SU ● 4 | Sussex Road Board | 1922-23 |
| Roberton | R. M | Waging | Overland | W ● 92 | Wagin Road Board | 1926-27 |
| Roberts | - | 128 Cambridge Street, West Leederville | Oldsmobile | 5901 | Metro Private Car | 1925-26 |
| Roberts | . | Stoneville | Ford Truck | GE ● 27 | Greenmount Road Board | 1926-27 |
| Roberts | A. | 56 Murray Street | Triumph 3½ H.P. Motorcycle | P 763 | Perth Municipality | 1915 |
| Roberts | A. | | Ford | KW ● 16 | West Kimberley Road Board | 1924-25 |
| Roberts | A. | Belmont Avenue, Belmont | CHevrolet | 6533 | Metro Private Car | 1926-27 |
| Roberts | A. E. | Jones Street, Collie | Chevrolet | CM 13 | Collie Municipality | 1926-27 |
| Roberts | A. E. | 84 Sailsbury Street, Subiaco | Morris cowley | 2678 | Metro Private Car | 1927-28 |
| Roberts | A. E. | Jones Street, Collie | Chevrolet | CM 13 | Collie Municipality | 1927-28 |
| Roberts | A. H. | 1 Bernard Street, Leederville | Premier 3½ H.P. Motorcycle | P 611 | Perth Municipality | 1915 |
| Roberts | A. H. | 1 Bernard Street, Leederville | Regal | 4899 | Metro Private Car | 1923-24 |
| Roberts | A. H. | 1 Bernard Street, Leederveille | Regal | 4899 | Metro Private Car | 1924-25 |
| Roberts | A. H. | 1 Bernard Street, Leederville | Regal | 8308 | Metro Private Car | 1925-26 |
| Roberts | A. H. | 1 Bernard Street, Leederville | Regal | 8308 | Metro Private Car | 1926-27 |
| Roberts | A. J. | 15 Rokeby Road, Subiaco | Ford | 8427 | Metro Private Car | 1925-26 |
| Roberts | A. J. | 66 Hay Street, Subiaco | Ford | 8427 | Metro Private Car | 1926-27 |
| Roberts | A. J. | 66 Hay Street, Subiaco | Ford | 8427 | Metro Private Car | 1927-28 |
| Roberts | A. L. | Meekatharra | Chevrolet | MK ● 23 | Meekatharra Road Board | 1924-25 |
| Roberts | A. L. | Meekatharra | Chevrolet | MK ● 23 | Meekatharra Road Board | 1925-26 |
| Roberts | A. L. | Meekatharra | Willys-Knight | MK ● 34 | Meekatharra Road Board | 1926-27 |
| Roberts | A. L. | Meekatharra | Willys-Knight | MK ● 34 | Meekatharra Road Board | 1927-28 |
| Roberts | Albert | 56 Murray Street, Perth | Triumph 3½ H.P. Motorcycle | P 919 | Perth Municipality | 1916 |
| Roberts | Alfred | Derby | Ford | KW ● 16 | West Kimberley Road Board | 1923-24 |
| Roberts | Andrew L. | Meekatharra | Chevrolet | MK ● 39 | Meekatharra Road Board | 1923-24 |
| Roberts | Arthur H. | 1 Barnard Street, Leederville | Premier 3½ H.P. Motorcycle | P 611 | Perth Municipality | 1916 |
| Roberts | C. | Dumbleyung | 3 H.P. Motorcycle | DU ● 12 | Dumbleyung Road Board | 1917-18 |