Recommendations - City of West Torrens - SA.Gov.au

4.0
Guidelines on use of Traffic Control Devices
The Code of Technical Requirements
for the legal use of traffic control
devices govern the use of traffic
control devices in South Australia.
The Code lists the traffic control
devices that are permitted for use,
including:
• Channelisation measures (traffic
islands, medians and kerb
extensions).
• Roundabouts.
• Pavement markings and signs.
• Koala crossings and EMU crossings.
• WOMBAT crossings.
• Distinctive pavements.
• Perimeter thresholds.
• Road humps (Watts profile humps
and flat top humps).
• Speed cushions.
• Road closures.
• Slow points.
• Driveway links.
• Centre blisters.
General approval has been given to
Council to install many of the above
traffic control devices.
A number of excluded devices that still
require DTEI approval include:
• Centre blisters.
• Mini roundabouts.
• Shared zones.
• Speed cushions.
• T-junction rearrangements.
• Any other traffic control device not
contained or referred to in the Code.
The Austroads Guide to Traffic
Engineering Practice Part 10 provides
a very detailed description of traffic
control devices used in Australia. It also
lists the advantages and disadvantages
of each device and the impact on
reducing volumes, speeds etc.
Measure
Vertical
Deflection
Devices
Horizontal
Deflection
Devices
Raised Tables
Wombat
Crossings
Description
A flat-topped raised section of roadway ramped
up from the normal level of the street and
Reduce
Speeds
Reduce
Traffic
Volume
Increase
Pedestrian
Safety
-
Reduce
Crash
Risk
located mid-block
A flat-topped raised area similar to a raised
table but with the top surface marked as a
designated pedestrian crossing to give priority
to pedestrians.
Road Humps A curved, raised area of a street similar tick In
dimension to raised tables eg. “Watts” and
sinusoidal profile
Road Cushions Form of road lump that allows non-car traffic
(cyclists/buses/emergency vehicles) to pass
Raised
-
unimpeded
A raised flat section of roadway extending
across the apron of an intersection ramped up
from the normal level of the street.
Lane
Methods to narrow the width of the street to
narrowings/ reduce speed and reduce pedestrian crossing
Kerb extensions distances
Slow points -
One-lane and
Two-lane
A series of kerb extensions on alternating sides
of a street that narrow and deflect the trafficable
roadway. Can be angled Or offset and can
include a central Median island or linemarking
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Part 2 - Traffic Management | Guidelines on use of Traffic Control Devices
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