Reassurance directional sign on the Princes Hwy (A1) at Colac. Image © Rob Tilley.

VicRoads explanation of the alphanumeric system is as follows (taken from the Linking Victoria brochure):

'M' Routes:
‘M’ roads (duplicated motorways) provide the primary road links that sustain economic and regional development. They connect Melbourne and other capital cities and major provincial centres, and they link major centres of production and manufacturing with Victoria’s export terminals. ‘M’ roads provide a consistent high standard of driving conditions with divided carriageways, four traffic lanes, sealed shoulders and with delineation and linemarking that is easily visible in all weather conditions.

'A' Routes: 'A' roads serve the same role as 'M' roads but carry less traffic. These roads are usually built as single carriageways. ‘A’ roads provide a similar consistently high standard of driving conditions on a single carriageway.

'B' Routes: ‘B’ roads provide the primary link between major regions not served by ‘A’ roads, and highly significant tourism regions. They have strategic significance for Victoria. B’ roads have sealed pavements wide enough for two traffic lanes, with good centreline and edge linemarking, shoulders and a high standard of guidepost delineation. Additional overtaking lanes are provided on higher traffic volume ‘B’ roads.

'C' Routes: ‘C’ roads provide the more important links between other centres of population, and between these centres and the primary transport network. ‘C’ roads generally are two lane sealed roads with shoulders.

Below are the various roads that this site has photos of. The routes are sorted by their route number, not their classification.

Route Number: Description: Preview:
Route Number
Route Number		 M/A1 (NSW Border to SA Border):
Princes Highway, West Gate Freeway, CityLink, Monash Freeway & Princes Freeway
Route Number M3 (Collingwood to Seaford):
Eastern Freeway and Eastlink
Route Number
Route Number		 M/A8 (Melbourne to SA Border):
Western Highway & Western Freeway
A20 (NSW Border To SA Border):
Sturt Highway
B23 (NSW Border To Cann River):
Monaro Highway
M31 (NSW Border To Thomastown):
Hume Freeway
Route Number
 		M/A39 (Seymour to NSW Border):
Goulburn Valley Highway & Goulburn Valley Freeway
Route Number B75 (Wallan to NSW Border):
Northern Highway 

M/A79 (Melbourne to NSW Border via Bendigo & Mildura):
Calder Highway & Calder Freeway
Route Number M80 (Laverton North to Watsonia North):
Western Ring Road & Metropolitan Ring Road
B100 (Geelong to Warrnambool):
Surf Coast Highway & Great Ocean Road
B110 (Geelong to Mornington):
Bellarine Highway, Point Nepean Road, Nepean Highway & Mornington Peninsula Freeway
C114 (Corio To Lara):
Forest Road South
B140 (Geelong to Hamilton):
Hamilton Highway
C141 (Geelong to Daylesford):
Ballan-Daylesford Road & Geelong-Ballan Road
C143 (Bannockburn to Skipton):
 Rokewood-Skipton Road, Rokewood-Shelford Road & Shelford-Bannockburn Road
C148 (Mortlake to Ararat):
Mortlake-Ararat Road
B160 (SA Border to Ballarat):
Glenelg Highway
C171 (Lismore to Scarsdale):
Scarsdale-Pitfield Road, Lismore-Scarsdale Road, Rokewood-Skipton Road, Lismore-Pitfield Road and Lismore-Scarsdale Road
C177 (Koroit to Illowa):
Southern Cross Road
C178 (Killarney to Dunkeld):
Penshurst-Dunkeld Road, Macarthur-Penshurst Road, Penshurst-Warrnambool Road, Penshurst-Port Fairy Road
B180 (Glenthompson to Elphinstone):
Pyrenees Highway, Mortlake-Ararat Road & Maroona-Glenthompson Road
C182 (Streatham to Rossbridge):
Rossbridge-Streatham Road
C183 (Mailor Flat to Toolong):
Spencer Road, Penshurst-Warrnambool Road and Mailors Flat-Koroit Road

A/B200 (Portland to Lascelles):
Henty Highway
B220 (Ouyen to Ballarat):
Sunraysia Highway
C221 (Pomonal To Tanwood):
Lake Fyans Road, Stawell-Avoca Road, Ararat-St Arnaud Road and Moonambel Road
C277 (Kangaroo Flat to Maryborough):
Bendigo-Maryborough Road
B280 (Bendigo to Heathcote):
McIvor Highway
C282 (Muckleford To Bridgewater On Loddon):
Bridgewater-Maldon Road, High Street and Castlemaine-Maldon Road
C283 (Creswick to Lockwood South):
Bendingo-Maldon Road, Maldon-Newstead Road & Creswick-Newstead Road
C294 (Ballarat To Buninyong):
Ballarat-Buninyong Road
C296 (Ballarat to Carngham):
Ballarat-Carngham Road
Route Number
Route Number		 A/B300 (Geelong To Lilydale):
Yarra Glen-Yea Road, Melba Highway, Maroondah Highway and Midland Highway 
C307 (Delacombe to Wendouree):
Delacombe-Wendouree Road
B340 (Seymour to Eildon):
Goulburn Valley Highway
C343 (East Bendigo):
Strathdale-White Hills Road
C345 (Goornong to Violet Town):
Bendigo-Murchison Road & Murchison-Violet Town Road
C357 (Murchison to Undera):
Wahring-Murchison Road, Murchison-Tutura Road & Tatura-Undera Road
C404 (Cranbourne East to Lilydale):
Cameron Street, Narre Warren-Cranbourne Road, Narre Warren North Road, Belgrave-Hallam Road, Belgrave-Gembrook Road, Monbulk Road, Hereford Road, Swansea Road and Anderson Street
Route Number C412 (Upper Ferntree Gully to Gembrook):
Burwood Highway and Belgrave-Gembrook Road


M/A/B420 (Dandenong to Phillip Island):
South Gippsland Freeway, South Gippsland Highway, Bass Highway & Phillip Island Road
C444 (Meeniyan to Tidal River):
Meeniyan-Promontory Road
B460 (Anderson to Morwell):
Bass Highway & Strzelecki Highway
Route Number B500 (Wangaratta to Bairnsdale):
Great Alpine Road
Route Number C606 (Swan Reach to Metung):
Metung Road
Route Number C722 (Craigieburn to Wollert):
Craigieburn Road
Route Number C723 (Mickelham to Yan Yean):
Donnybrook Road
Route Number C725 (Whittlesea to Yea):
Whittlesea-Yea Road
Route Number C729 (Kilmore to Epping):
Epping Road, Merriang Road, Kilmore Road and High Street
C777 (Rosebud West to Frankston South):
Rosebud-Flinders Road and Frankston-Flinders Road

M/A780 (Lynwood to Tyabb):
Western Port Highway
C781 (Baxter to Tooradin):
Baxter-Tooradin Road
C782 (Mornington to Tyabb):
Main Street and Mornington-Tyabb Road
C783 (Mornington To Safety Beach):
The Esplanade and Marine Drive
A790 (Marong to Ravenswood):
Calder Alternative Highway 
C793 (Kyneton):
Kyneton Main Road		 tn_200610_02_malmsbury_malmsburyeastrd.jpg
C803 (Ballan):
Old Melbourne Road 		tn_200612_01_ballan_ballan-daylesfordrd&geelong-ballanrd_c141.jpg
C805 (Burrumbeet to Warrenheip):
Ballarat-Burrumbeet Road

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