Road Photos & Information: South Australia
M2   Southern Expressway (M2)

Statistics:

Route Numbering:

General Information:

The Southern Expressway is Australia's only one way motorway. At certain times of the day, it changes direction, depending on the peak flows of traffic.

At the location of the route, provision  had  been  made  for  the  development  of  a  north-south  transportation  corridor  serving  the  southern region  since  the  late  1960's.    In  1984  the  then  State  Government  announced  the  Third  Arterial  Project,  the development of which was subsequently split into two phases: the upgrading of Main South Road and Marion Road in the Darlington area and the construction of a new road from Bedford Park / Darlington to Reynella.   The Southern Expressway Project, announced in March 1995, forms the second phase of this project. 1

The route features electronic overhead signs at the approaches to the entry and exit points indicate the direction of traffic with crosses and arrows, red lights on the side of the road warn motorists attempting to travel in the opposite direction to the flow of traffic and also roadside signs along the Southern Expressway flash in hazardous situations -  yellow to advise motorists to slow down or red to stop. 2

The table below indicates traffic flow direction times: 2

  Citybound Closed for changeover Southbound Closed for changeover
Weekdays 2am -12.30pm 12.30pm - 2pm 2pm - 12.30am 12.30am - 2am
Weekends & public holidays 2pm - 12.30am 12.30am - 2am 2am - 12.30pm 12.30pm - 2pm

History:

Map

Preview: Description:
tn_200909_01_hackham_mainsthrd_a13.jpg Advance Directional Sign:
Variable AD sign, northbound on Main South Road (A13) at Hackham, September 2009.

Image © Paul Rands

tn_200909_02_hackham_mainsthrd_a13.jpg Intersection Directional Sign:
ID sign over Main South Rd at Hackham at the junction with Southern Expwy, September 2009.

Image © Paul Rands

tn_200909_03_noarlungadowns.jpg Variable One Way Sign:
Variable one way sign at Noarlunga Downs on the Southern Expressway. When not showing One Way, it shows Wrong Way Go Back or No Entry. September 2009.

Image © Paul Rands

tn_200909_04_noarlungadowns_perrypath.jpg Perry Path:
Southern Expway as it heads northbound under Perry Path at Noarlunga Downs, September 2009.

Image © Paul Rands

tn_200909_05_noarlungadowns_peppermintpath.jpg Peppermint Path:
Southern Expway as it heads northbound under Peppermint Path at Noarlunga Downs, September 2009.

Image © Paul Rands

tn_200909_06_noarlungadowns_beachrd.jpg Advance Directional Sign:
AD sign at Noarlunga Downs, for the Beach Road interchange, September 2009.

Image © Paul Rands

tn_200909_07_noarlungadowns_honeypotrd.jpg Honeypot Road:
Southern Expway as it heads northbound under Honeypot Rd at Noarlunga Downs, September 2009.

Image © Paul Rands

tn_200909_08_noarlungadowns_beachrd.jpg Beach Road Interchange:
ID sign at the Beach Rd interchange at Noarlunga Downs, September 2009.

Image © Paul Rands

tn_200909_09_noarlungacentre_poznanpath.jpg Poznan Path:
Poznan Path and Beach Road interchange at Noarlunga Centre, September 2009.

Image © Paul Rands

tn_200909_10_noarlungacentre_beachrd.jpg Beach Road Interchange:
The split between Southern Expressway and Beach Road at Noarlunga Centre, September 2009.

Image © Paul Rands

tn_200909_11_noarlungacentre_beachrd.jpg Beach Road Interchange:
Southern Expway as it passes through the Beach Rd interchange at Noarlunga Centre, September 2009.

Image © Paul Rands

tn_200909_12_christiedowns_elizabethrd.jpg Elizabeth Road:
Southern Expwy as it travels under Elizabeth Rd in Christie Downs, September 2009.

Image © Paul Rands

tn_200909_13_christiedowns_flaxmillrd.jpg Flaxmill Road:
Southern Expwy as it travels under Flaxmill Rd in Christie Downs, September 2009.

Image © Paul Rands

tn_200909_14_christiedowns_glenhelenpath.jpg Glenhelen Path:
Glenhelen Path pedestrian bridge at Christie Downs, September 2009.

Image © Paul Rands

tn_200909_15_lonsdale_sherriffsrd.jpg Advance Directional Sign:
AD sign
at Lonsdale for Sherriffs Rd, September 2009.

Image © Paul Rands

tn_200909_16_lonsdale_osullicanbchrd.jpg O'Sullivan Beach Road:
Southern Expwy as it passes under O'Sullivan Beach Road at Lonsdale, September 2009.

Image © Paul Rands

tn_200909_17_lonsdale_sherriffsrd.jpg Sherriffs Road Interchange:
Intersection directional sign at the right-hand exit of Sherriffs Road in Lonsdale, September 2009.

Image © Paul Rands

tn_200909_18_lonsdale_sherriffsrd.jpg Sherriffs Road Interchange:
The right-handed interchange with Sherriffs Road at Lonsdale, September 2009.

Image © Paul Rands

tn_200909_19_reynella_sugarbushpath.jpg Sugarbush Path:
Southern Expressway as it passes under Sugarbush Path in Reynella, September 2009.

Image © Paul Rands

tn_200909_20_reynella_moorerd.jpg Moore Road Overpass:
Southern Expwy as it passes under Moore Rd in Reynella, September 2009.

Image © Paul Rands

tn_200909_21_sheidowpk_youngst.jpg Young Street:
Southern Expressway at Sheidow Park as it passes under Young Street, September 2009.

Image © Paul Rands

tn_200909_22_trottpk_glenthornepath.jpg Glenthorne Path:
Glenthorne Path bridge at Trott Park, September 2009.

Image © Paul Rands

tn_200909_23_trottpk_majorsrd.jpg Majors Road Overpass:
Southern Expwy at Trott Park as it passes under Majors Rd, September 2009.

Image © Paul Rands

tn_200909_24_ohalloranhill.jpg Steep Descent Ahead:
Steep descent ahead warning signs as the Southern Expressway makes its way down O'Halloran Hill, September 2009.

Image © Paul Rands

tn_200909_25_ohalloranhill_southrd_a13_marionrd_a14.jpg Advance Directional Sign:
AD sign at O'Halloran Hill for the junction at Sturt with Main South Rd (A13) and Marion Rd (A14), September 2009.

Image © Paul Rands

tn_200909_26_darlington_marionrd_a14.jpg Arrester Bed Ahead Sign:
Sign at Darlington indicating distance and entrance to the arrester bed at the bottom of the hill. September 2009.

Image © Paul Rands

tn_200909_27_darlington_marionrd_a14.jpg Variable Message Sign:
VMS sign at Darlington showing access to Marion Road (A14) interchange, September 2009.

Image © Paul Rands

tn_200909_28_darlington_marionrd_a14.jpg Arrester Bed Ahead Sign:
Sign at Darlington indicating distance to the arrester bed at the bottom of the hill. September 2009.

Image © Paul Rands

tn_200909_29_sturt_marionrd_a14.jpg Advance Directional Sign:
Variable AD sign at the interchange with Marion Road (A14) at Sturt, September 2009.

Image © Paul Rands

tn_200909_30_sturt_marionrd_a14.jpg Intersection Directional Signs:
ID sign assembly at the interchange with Marion Rd (A14) at Sturt, September 2009.

Image © Paul Rands

tn_200909_31_sturt_southrd_a13.jpg End M2 / Main South Road Intersection:
The northern terminus of M2 - Main South Road (A13) at Sturt, September 2009.

Image © Paul Rands

1 Parliament of South Australia, Southern Expressway Stage 2 Submission to the Parliamentary Public Works Committee, Environmental Report Summary
2 Transport SA, Traffic Operations, Southern Expressway Traffic Management System Page
3 Green Left, Expressway Opposition in Adelaide
4 Parliament of South Australia, Southern Expressway Stage 2 Submission to the Parliamentary Public Works Committee, Proposal
5 Built Environs, Southern Expressway Stage 2
6 Transport SA, Media Releases, Safety Improvements on the Southern Expressway
7 Transport SA, Media Releases, New Lighting Night Hours
8 Premier of South Australia, Mike Rann News, Safety Upgrade to Southern Expressway

Last updated: 08-Feb-2019 20:35

This site © Paul Rands. All rights reserved. Some portions © (copyright) by their respective and credited owners. Permission must be obtained before using any images from this site. For details, please email by clicking here.