and Tarcutta. High altitude sections subject to snow and ice have yellow lane markings and red reflector posts (which are sometimes double or triple height); in contrast to the white lines and posts generally seen elsewhere around Australia. It is recommended that snow chains are carried for all two-wheel drive vehicles travelling on this highway within Kosciuszko National Park during the winter months. History The passing of the Main Roads Act of 1924 through the Parliament of New South Wales provided for the declaration of Main Roads, roads partially funded by the State government through the Main Roads Board (later the Department of Main Roads, and eventually Transport for NSW). Monaro Highway was declared (as Main Road No. 4) on 8 August 1928, heading northwest from Tathra, via Bega, Nimmitabel, Cooma, Adaminaby, Tumut, Adelong, and Lower Tarcutta to Wagga Wagga. With the passing of the Main Roads (Amendment) Act of 1929 to provide for additional declarations of State Highways and Trunk Roads, this was amended to State Highway 4 on 8 April 1929. The Department of Main Roads, which had succeeded the MRB in the previous year, proclaimed the portion of the highway between Wagga Wagga and Hume Highway at Lower Tarcutta to be part of Sturt Highway on 8 August 1933; the highway's western end was truncated at its own junction with Hume Highway near Hillas Creek instead. When the Snowy Mountains Scheme commenced in 1949, the road began to increase in importance. Roadworks to increase the standard of the road were undertaken, and were often paid for by the Snowy Mountains Hydro-Electric Authority. In 1955, it was decided that what was still then known as Monaro Highway would be renamed as Snowy Mountains Highway. This was done as only a relatively small portion of the road was actually within the Monaro region. The section of road between Cooma and Nimmitabel was also reclassified as part of State Highway 19, which at that time ran from Canberra, to the Victorian border west of . The various roads classified as State Highway 19, were then named as Monaro Highway in 1958. In contrast with Snowy Mountains Highway, the entire length of that highway is within the Monaro region. Over the years further changes to the alignment have occurred. The eastern section of the highway no longer runs west to Nimmitabel, instead meeting Monaro Highway to the south; the old section