Types of roads
These roads are duplicated (dual carriageway) roadways with at least two lanes in each direction. The majority of these roadways are built to freeway standard, however some sections in rural areas are of highway standard with other roads intersecting them instead of interchanges.
In rural areas, they provide high standard links between Melbourne, other capital cities and major regional centres. Within Melbourne, they are urban freeways or tollways.
"M" roads in Victoria:
- M1 - Monash Freeway / CityLink
- M1 - Princes Freeway / Highway
- M1 - West Gate Freeway
- M2 - Tullamarine Freeway / CityLink
- M3 - Eastern Freeway
- M3 - EastLink
- M3 - Frankston Freeway
- M8 - Western Freeway / Highway
- M11 - Mornington Peninsula Freeway
- M11 - Peninsula Link
- M31 - Hume Freeway
- M39 - Goulburn Valley Freeway
- M79 - Calder Freeway
- M80 - Metropolitan Ring Road
- M80 - Western Ring Road
- M420 - Bass Highway
- M420 - South Gippsland Freeway / Highway
- M780 - Western Port Highway
The CityLink sections of the M1 and M2, plus the EastLink section of the M3 are toll roads.
Many "M" roads in Melbourne have freeway exit numbers installed along them. This allows drivers unfamiliar with the area to easily identify exits rather than rely just on a road or suburb name. It also gives drivers a sense of how far to their required exit so they can plan lane changes well in advance.
Exit numbers increase sequentially as the distance from Melbourne's CBD increases. Exits are denoted by a number, except for those within about 15 kilometres of the city centre which have the number prefixed by the bearing of the exit in relation to the city, such as "E" for east or "W" for west.
Trucks exceeding 4.5 tonnes of gross vehicle mass are banned from the furthermost right lane on a number of Victoria's freeways which carry 3 or more lanes of traffic. Buses and emergency vehicles are exempt from this ban.
Signage installed above lanes and along the median strip identify areas where this restriction applies.
These roads are generally single carriageway roadways. The majority of them have sealed shoulders and overtaking lanes in some sections.
They have a similar function to "M" standard roads, but generally carry less traffic. They provide high standard links between Melbourne, other capital cities and between regional centres.
"A" roads in Victoria:
- A1 - Princes Highway
- A8 - Western Highway
- A10 - Princes Highway
- A20 - Sturt Highway
- A39 - Goulburn Valley Highway
- A79 - Calder Highway
- A200 - Henty Highway
- A300 - Midland Highway
- A420 - Bass Highway
- A440 - South Gippsland Highway
- A780 - Western Port Highway
- A790 - Calder Alternative Highway
These roads are generally single carriageway roadways. They are sealed and are of a good standard.
They function as primary links between regions not served by "A" roads. They also include the highly significant tourist routes of the Great Ocean Road, Murray Valley Highway and the Great Alpine Road.
"B" roads in Victoria:
- B12 - Mallee Highway
- B23 - Monaro Highway
- B75 - Northern Highway
- B100 - Great Ocean Road
- B100 - Surf Coast Highway
- B110 - Bellarine Highway
- B110 - Nepean Highway
- B110 - Point Nepean Road
- B120 - Hopkins Highway
- B130 - Baanip Boulevard
- B140 - Hamilton Highway
- B160 - Glenelg Highway
- B180 - Maroona - Glenthompson Road
- B180 - Pyrenees Highway
- B200 - Henty Highway
- B210 - Stawell - Warracknabeal Road
- B220 - Sunraysia Highway
- B240 - Wimmera Highway
- B260 - Loddon Valley Highway
- B280 - McIvor Highway
- B300 - Maroondah Highway
- B300 - Melba Highway
- B300 - Midland Highway
- B320 - Maroondah Highway
- B340 - Goulburn Valley Highway
- B360 - Maroondah Highway
- B380 - Warburton Highway
- B400 - Murray Valley Highway
- B410 - Bandiana Link Road
- B420 - Phillip Island Road
- B460 - Bass Highway
- B460 - Strzelecki Highway
- B500 - Great Alpine Road
- B668 - Pound Road
These roads are generally single carriageway roadways. Almost all of them are sealed and their standard is determined by usage and terrain.
They function as important links between population centres and also provide access links to the primary road network.
Some "C" roads are former highway routes with freeway bypasses having relieved them of much of their original through traffic. A few of these former highway routes are high quality dual carriageway roads, such as the Princes Highway (C101) through Pakenham.
There are hundreds of "C" roads throughout Victoria.
Melbourne metropolitan routes
These roads are located within Melbourne's metropolitan area and generally define major transport routes to the city and through the suburbs.
These routes may vary in standard from single carriageway roads to multi-lane arterials and highways.