Three Position Signals
CHRONOLOGICAL LIST OF INSTALLATION DATES
| Richmond - Hawksburn (Caulfield through and Frankston lines) | Oct. 4 1915 |
| Richmond - Prahran | Oct. 4 1915 |
| South Yarra - Hawksburn (Caulfield local and Dandenong lines) | Oct. 4 1915 |
| Flinders Street A box - Viaduct Junction | Dec. 2 1917 |
| Viaduct Junction - #1 box Spencer Street (via old suburban platforms) | Dec. 2 1917 |
| Prahran - Ripponlea (first 3 position light signal B 210) | Dec. 16 1917 |
| Ripponlea - Elsternwick | May 13 1918 |
| Kensington - Essendon (first 4 aspect signalling Kensington - Newmarket) | June 17 1918 |
| Flinders Street E box- Richmond (Sandringham line) | Sept. 1 1918 |
| North Melbourne - Kensington (low level) | Oct. 27 1918 |
| Flinders Street B box - Flinders Street E box (Sandringham line) | Dec. 15 1918 |
| Flinders Street C box - Flinders Street E box (Caulfield and FKN??? line) | Dec. 15 1918 |
| Flinders Street C and D box - Flinders Street E box (Lilydale line) | Dec. 15 1918 |
| Flinders Street E box (Sandringham line) | June 1 1919 |
| Flinders Street E box - Richmond (Caulfield/Frankston lines??) | June 1 1919 |
| Flinders Street E box - Richmond (Lilydale line) | June 1 1919 |
| Flinders Street A box - Inglis Street (Port Melbourne line) | June 8 1919 |
| Newmarket - Racecourse (2 position lights) | July 5 1919 |
| Flinders Street E box- East Richmond ??? Jungways says Jol Jct | Aug. 31 1919 |
| Flinders Street A box - St Kilda | Dec. 7 1919 |
| Flinders Street D box - Clifton Hill A box | April 3 1921 |
| Hawksburn - Caulfield (both lines) | Dec. 18 1921 |
| Upper Ferntree Gully - Belgrave (narrow gauge, single line, ATC) | Dec. 22 1921 |
| East Richmond - Hawthorn (first large scale installation of light signals) | Oct. 15 1922 |
| Hawthorn - Camberwell (first large scale installation of light signals) | Oct. 29 1922 |
| Camberwell - Canterbury (first large scale installation of light signals) | Nov. 5 1922 |
| North Melbourne - Kensington (high level) | Jan. 20 1924 |
| Franklin Street - North Melbourne | May 25 1924 |
| Camberwell station | June 22 1924 |
| Viaduct Junction - Franklin Street (via new suburban platforms) | Aug. 17 1924 |
| Spencer Street #1 box - Franklin Street | Aug. 17 1924 |
| Hawthorn station | June 14 1925 |
| Tallarook - Seymour (Goulburn Junction controlled by Seymour A box) | Aug. 16 1925 |
| Viaduct Junction - Franklin Street (Special lines) | Dec. 13 1925 |
| Flinders Street D box (Jolimont line) | April 11 1926 |
| Elsternwick - Brighton Beach | July 18 1926 |
| Burnley - Heyington | Aug. 8 1926 |
| Clifton Hill - Westgarth | Sept. 19 1926 |
| Clifton Hill - Northcote Loop Junction | Sept. 19 1926 |
| Maldon Junction (controlled by Castlemaine A box) | Nov. 28 1926 |
| Brighton Beach - Sandringham | Dec. 19 1926 |
| Canterbury - Surrey Hills | March 30 1927 |
| South Kensington - Yarraville A box | Aug. 7 1927 |
| Footscray - West Footscray | Oct. 15 1927 |
| South Kensington - West Footscray (goods lines) | Oct. 16 1927 |
| Newport South - Manor | March 15 1928 |
| North Melbourne - South Kensington | June 10 1928 |
| North Melbourne - Macaulay | June 10 1928 |
| Manor - Lara | July 15 1928 |
| Lara - North Geelong A box | Sept. 4 1928 |
| St Kilda station | Oct. 14 1928 |
| South Kensington station | Oct. 21 1928 |
| Yarraville A box - Newport A box | March 24 1929 |
| Dandenong station | June 23 1929 |
| Sunshine - Albion | July 1 1929 |
| Albion - Broadmeadows | July 1 1929 |
| West Footscray - Sunshine | Oct. 11 1929 |
| Surrey Hills - Box Hill | Oct. 20 1929 |
| Albion - St Albans | Feb. 15 1930 |
| Footscray station | May 4 1930 |
| Box Hill station | June 15 1930 |
| St Albans station | Aug. 1 1930 |
| Caulfield - Glenhuntly (including Caulfield station and power box) | Nov. 26 1933 |
| Caulfield - Carnegie (first searchlight signal post 23 at Caulfield) | Nov. 26 1933 |
| Carnegie - Oakleigh A box (first large scale installation of searchlight signals) | Dec. 8 1940 |
| Ivanhoe - Heidleberg | June 19 1949 |
| Alphington - Ivanhoe | Dec. 16 1951 |
| Longwarry - Drouin | June 22 1952 |
| Nar Nar Goon - Tynong | June 26 1953 |
| Pakenham - Nar Nar Goon | Oct. 10 1954 |
| Officer - Pakenham | Feb. 27 1955 |
| Berwick - Officer | |
| Patterson - Highett | Jan. 19 1958 |
| Bentleigh - Patterson | June 25 1961 |
| Richmond - Burnley (Burnley through lines flyover?) | Jan. 9 1967 |
| Inglis Street - Port Melbourne | Dec. 14 1969 |
| Oakleigh B - Clayton | Dec. 6 1970 |
| Springvale - Dandenong | May 9 1971 |
| Clayton - Westall | July 25 1971 |
| Westall - Springvale | Feb. 20 1972 |
| Highett - Cheltenham | Dec. 12 1972 |
| Flinders Street D box - Richmond??? where exactly? (Burnley through lines) | Feb. 4 1973 |
| Glenhuntly - Bentleigh | Nov. 10 1974 |
| Springvale station | Feb. 16 1975 |
| Oakleigh station | May 11 1975 |
| Carrum - Frankston | Oct. 29 1976 |
| Chelsea - Carrum | Dec. 19 1976 |
| Mordialloc - Chelsea | Jan. 23 1977 |
| Cheltenham - Parkdale | Dec. 7 1985 |
| Parkdale - Mordialloc | April 5 1986 |
| Glenhuntly station | May 9 1987 |