Speed limits in Australia range from
shared zones to . Speed limit signage is in km/h since
metrication
Metrication or metrification is the act or process of converting to the metric system of measurement. All over the world, countries have transitioned from local and traditional units of measurement to the metric system. This process began in F ...
on 1 July 1974. All speed limits (with the sole exception of the South Australian school and roadworks zones which are signposted at 25 km/h) are multiples of 10 km/h – the last digit in all speed signs is zero. Speed limits are set by state and territory legislation albeit with co-ordination and discussion between governments.
Common limits
![Australian Speed Advisory Sign](https://upload.wikimedia.org/wikipedia/commons/4/45/Australian_Speed_Advisory_Sign.jpg)
Australian states and territories use two "default" speed limits. These apply automatically in the absence of 'posted' speed restriction signage. The two default speed limits are:
* within built-up areas, , except for the Northern Territory which remains at
* outside built-up areas, ; two exceptions are Western Australia and the Northern Territory at
Common speed zones below the default built up area 50 km/h limit are:
* Shared zones (signposted areas where pedestrians and motorised traffic share the same space) are .
*
School zone
A school zone refers to an area on a street near a school or near a crosswalk leading to a school that has a likely presence of younger pedestrians. School zones generally have a reduced speed limit during certain hours.
Fines
Fines for speedin ...
s are variable speed zones, with a limit applying during
gazette
A gazette is an official journal, a newspaper of record, or simply a newspaper.
In English and French speaking countries, newspaper publishers have applied the name ''Gazette'' since the 17th century; today, numerous weekly and daily newspapers ...
d school terms (which may include pupil-free days) and at specific times of the day when children are expected to be present. In South Australia, the limit is . A minority of school zones have flashing lights to indicate when the lower speed limit applies. In Western Australia, every school has a flashing speed zone sign, most of which are solar powered.
* 40 km/h zones. A number of local governments have implemented lower speed limits, typically 40 km/h, in certain areas, such as shopping precincts, whole suburbs such as Balmain and Rozelle in Sydney, or areas with high pedestrian activity.
Common speed zones above the default limits are:
* Many sub-arterial roads are zoned .
*Major connector roads and smaller highways are zoned , , or .
* Some highways and freeways are zoned .
* Most of the
Stuart,
Arnhem
Arnhem ( or ; german: Arnheim; South Guelderish: ''Èrnem'') is a city and municipality situated in the eastern part of the Netherlands about 55 km south east of Utrecht. It is the capital of the province of Gelderland, located on both banks of ...
,
Barkly and
Victoria
Victoria most commonly refers to:
* Victoria (Australia), a state of the Commonwealth of Australia
* Victoria, British Columbia, provincial capital of British Columbia, Canada
* Victoria (mythology), Roman goddess of Victory
* Victoria, Seychelle ...
highways in the Northern Territory are zoned .
The "END" speed limit sign is increasingly used throughout Australia to signal the end of a posted speed restriction, or built-up area "default" speed-limit leading to the jurisdiction's "rural" default speed limit. It contains the word "END" and a number in a black circle beneath this, representing the ceasing speed-limit. It is typically used where, according to AS1742.4 the road beyond has certain hazards such as hidden driveways, poor camber, soft edges and other hazards where the road authority feels a posted speed limit sign might be too dangerous or otherwise unwarranted. It is intended therefore to invoke particular caution. This sign is used as a direct replacement for the slash-through speed derestriction signs common in Europe and elsewhere.
Speed limits are
enforced in all areas of the country. Tolerance is about 6 km/h in urban areas and 9 km/h on highways depending on regulations of respective state such that driver driving on or below the tolerance speed will not receive a ticket. This is the case in South Australia and other states have similar tolerances. One exception is Victoria where they will deduct 2–4 km/h in from the speed reading such that reasonable doubt is credited to the driver. especially in light of the fact that earlier Australian Design Rules specified that vehicle speedometers may have up to 10% leeway in accuracy. This was updated in 2006 to require that the "speed indicated shall not be less than the true speed of the vehicle." Detection measures used are
radar
Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, w ...
,
LIDAR
Lidar (, also LIDAR, or LiDAR; sometimes LADAR) is a method for determining ranges (variable distance) by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. It can also be ...
, fixed and mobile
speed cameras
A traffic enforcement camera (also red light camera, speed camera, road safety camera, road rule camera, photo radar, photo enforcement, Gatso, safety camera, bus lane camera, flash for cash, Safe-T-Cam, No contact apprehension camera dependin ...
(using various detection technologies),
Vascar
VASCAR (Visual Average Speed Computer And Recorder) is a type of device for calculating the speed of a moving vehicle. The first VASCAR device was created in 1966 by Arthur Marshall. It is used by police officers to enforce speed limits, and may b ...
, pacing and aircraft.
Default speed limits by state and territory
Despite introduction of model
national road rules by the states in 1999, Western Australia and the Northern Territory retain different default speed limits. The table below indicates the default speed limits along with typical school zone limits and the highest zone in each locality.
In the external territories, and in some special cases (such as Lord Howe Island, NSW), the speed limits may differ significantly from those found across the rest of the nation.
Limits for Learner, Provisional and Probationary licence holders
The table below indicates the different speed limits that apply for each state's licence holders.
The limits apply when the roads stated speed is above the licence's speed limit, e.g.: a person with a NSW P1 licence can drive at a max speed of 90 km/h on 100/110 km/h signed roads in any state. Conversely, a person with a Queensland provisional licence is not speed limited and can drive at the road's stated speed, even while in NSW where local provisional drivers are limited to 90 km/h.
Limits for trucks and buses
New South Wales has a limit of 100 km/h for heavy (more than 4.5 tonne) vehicles which is not a feature of the Australian Road Rules. Additionally particular heavy vehicles (some buses and vehicles more than 13.9 tonne) and are required to have speed monitoring devices fitted.
Signage
File:Australia R4-1 (60).svg, Standard speed limit sign
File:Australia road sign R4-10 (40).svg, Restricted speed area sign
File:Australia road sign R4-6.svg, Local traffic area sign
File:Australia road sign R4-4.svg, Shared zone sign
File:AU-VIC road sign R4-V105 (40).svg, School zone sign in NSW and Victoria
File:Australia road signs R4-12 (60).svg, Speed limit ends sign
File:Australia road sign R4-11 (40).svg, Restricted speed area ends sign
File:Australia road sign R4-5.svg, End shared zone sign
File:Australia road sign W8-2-60.svg, Advisory speed sign
File:Australia road sign W1-9-1.svg, Exit advisory speed sign
File:Australia road sign G9-79 (40).svg, Speed limit change ahead sign
Historical limits
![Aupremetricspeedlimit](https://upload.wikimedia.org/wikipedia/commons/0/0e/Aupremetricspeedlimit.jpg)
Historically, Australia operated a simple speed limit system of urban and rural default limits, denoted in
miles per hour
Miles per hour (mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour. It is used in the United Kingdom, the United States, and a number of smaller countrie ...
. As part of
metrication
Metrication or metrification is the act or process of converting to the metric system of measurement. All over the world, countries have transitioned from local and traditional units of measurement to the metric system. This process began in F ...
in 1974, speed limits and speed advisories were converted into
kilometres per hour
The kilometre per hour ( SI symbol: km/h; non-standard abbreviations: kph, km/hr) is a unit of speed, expressing the number of kilometres travelled in one hour.
History
Although the metre was formally defined in 1799, the term "kilometres per ho ...
,
rounded to the nearest 10 km/h, leading to small discrepancies in speed limits. Also, the signage was changed from the design where the words "SPEED LIMIT" appear above the numeric limit (as specified in the current US MUTCD) to the design where the numeric limit is inscribed on a red circle (which is defined by the Vienna Convention and thus it became an international sign for speed limit).
Urban limits
The urban default, which prior to the 1930s was , applied to any "built up area", usually defined by the presence of street lighting. Over the next 30 years, each of the states and territories progressively increased the limit to , with New South Wales being the last to change in May 1964. South Australia adopted on 30 November 1950, along with the "new short-right hand turn" in place of a
hook turn
A hook turn (Australian English) or two-stage turn (British English), also known as a Copenhagen Left (in reference to cyclists specifically), is a road cycling manoeuvre or a motor vehicle traffic-control mechanism in which vehicles that would n ...
.
Metrication
Metrication or metrification is the act or process of converting to the metric system of measurement. All over the world, countries have transitioned from local and traditional units of measurement to the metric system. This process began in F ...
led to the default urban limits of being converted to 60 km/h, an increase of .
In the late 1990s and early 2000s, the urban default limit was progressively lowered to nationally for reasons of road, and especially pedestrian, safety. However, many existing roads, especially subarterial roads in urban areas, have had limits posted on them. Queensland's Manual of Uniform Traffic Control Devices (Speed Controls) states that is the general minimum speed limit for traffic-carrying roads. The Northern Territory has retained the limit; however, is also a common speed limit (particularly in residential areas).
Rural limits
Outside of built up areas, a ''
prima facie
''Prima facie'' (; ) is a Latin expression meaning ''at first sight'' or ''based on first impression''. The literal translation would be 'at first face' or 'at first appearance', from the feminine forms of ''primus'' ('first') and ''facies'' (' ...
'' speed limit applied. In New South Wales and Victoria, speed limit was 50 miles per hour
(80 km/h in New South Wales
after metrication). In the 1970s however, most state speed limits were gradually replaced by absolute limits.
An absolute speed limit of was introduced to Victoria in 1971, as a trial.
This was subsequently reduced to in late 1973. South Australia introduced an absolute speed limit of in 1974.
With
metrication
Metrication or metrification is the act or process of converting to the metric system of measurement. All over the world, countries have transitioned from local and traditional units of measurement to the metric system. This process began in F ...
in 1974, the rural defaults of and became and respectively. The 50 mph limit in New South Wales became a limit of 80 km/h.
New South Wales introduced an absolute speed limit of in 1979, replacing the limit of
The Northern Territory introduced an absolute speed limit of in 2007, along with zones on the Territory's four major highways.
NT open speed limits
The
Northern Territory
The Northern Territory (commonly abbreviated as NT; formally the Northern Territory of Australia) is an states and territories of Australia, Australian territory in the central and central northern regions of Australia. The Northern Territory ...
had no blanket speed limits outside major towns until January 2007, when a general rural speed limit of was introduced, although four major highways had higher zones. Speed-limit advocates note that the per-capita fatality rate in 2006 was the highest in the
OECD
The Organisation for Economic Co-operation and Development (OECD; french: Organisation de coopération et de développement économiques, ''OCDE'') is an intergovernmental organisation with 38 member countries, founded in 1961 to stimulate e ...
and twice the Australian average. In 2009, the opposition (
Country Liberal Party
The Country Liberal Party of the Northern Territory (CLP) is a centre-right political party in Australia's Northern Territory. In local politics it operates in a two-party system with the Australian Labor Party (ALP). It also contests federal ...
) unsuccessfully sought the removal of the limits on three out of the four highways where it applied, arguing that total fatalities in the Northern Territory had increased significantly during the first two years of the speed limit. In argument against the motion, the government provided more detailed statistics than normally published; these statistics showed a reduction in fatalities along the highways where limits were introduced. In 2011 the opposition argued for a return to "open speed limits"
. For the 2012 election the Country Liberals' transport policy promised an
evidence-based approach. After winning government, de-restriction of
Stuart Highway
Stuart Highway is a major Australia, Australian highway. It runs from Darwin, Northern Territory, Darwin, in the Northern Territory, via Tennant Creek and Alice Springs, to Port Augusta in South Australia; a distance of . Its northern and sou ...
was proposed; a planned 12-month de-restriction was initiated on 1 February 2014. The trial on of Stuart Highway was expanded later in the year to another , and continued indefinitely in January 2015 during a review of the initial results since "in the first 11 months, there were no recorded fatalities." From September 2015, a stretch of
Stuart Highway
Stuart Highway is a major Australia, Australian highway. It runs from Darwin, Northern Territory, Darwin, in the Northern Territory, via Tennant Creek and Alice Springs, to Port Augusta in South Australia; a distance of . Its northern and sou ...
between
Barrow Creek and
Alice Springs
Alice Springs ( aer, Mparntwe) is the third-largest town in the Northern Territory of Australia. Known as Stuart until 31 August 1933, the name Alice Springs was given by surveyor William Whitfield Mills after Alice, Lady Todd (''née'' Al ...
had speed limits removed for a 12-month trial. speed limits were restored on 20 November 2016 due to the electoral loss of the Country Liberal Party.
Derestriction signs in NSW
Often the start of rural default 'limits' or ''
prima facie
''Prima facie'' (; ) is a Latin expression meaning ''at first sight'' or ''based on first impression''. The literal translation would be 'at first face' or 'at first appearance', from the feminine forms of ''primus'' ('first') and ''facies'' (' ...
'' allowances were signalled by use of the speed derestriction sign, catalogued R4-2 in AS1742.4. (2009 edition has dropped from reference the R4-2 speed derestriction). The speed derestriction sign (//) had developed 'different meaning' over time at state and territory level, although its contract-meaning under
Vienna Convention on Road Signs and Signals
The Convention on Road Signs and Signals, commonly known as the Vienna Convention on Road Signs and Signals, is a multilateral treaty designed to increase road safety and aid international road traffic by standardising the signing system for roa ...
where the sign is catalogued C17a is "End of all local prohibitions imposed on moving vehicles" and has never changed. In the Northern Territory, they designated the end of speed restrictions. In Victoria and Western Australia they meant that the rural default speed limit applied, whilst in New South Wales, they indicated that the ''prima facie'' limit applied.
![YarrawarraRdSigns (cropped)](https://upload.wikimedia.org/wikipedia/commons/0/00/YarrawarraRdSigns_%28cropped%29.jpg)
New South Wales's ''prima facie'' limit, often signed by derestriction signs, was only enforced in cases where a driver's speed could be demonstrated to be excessive or dangerous in the context of prevailing road conditions. This was somewhat similar in principle to "reasonable and prudent" limits in other jurisdictions. This led to the widespread but misleading belief that no limit applied, and that derestriction signs indicated an "unlimited" limit. This belief, coupled with repeated studies showing 85th percentile speeds in excess of on major routes, comparatively high road tolls, difficulty in prosecuting speeding offences, and the variance in meaning of the derestriction sign across states, led New South Wales to harmonise its rural default limit to in 1978.
The use of derestriction signs in New South Wales was officially discouraged, and on state controlled routes, signs were progressively used instead.
See also
*
Australian Road Rules
The Australian Road Rules are a set of model road rules developed by the National Road Transport Commission which form the basis for state and territory road rules across Australia. The first edition of the rules was published on 19 October 19 ...
References
External links
''Metric Motoring'' (1973)– Original television advertisements explaining the conversion to metric speed limits. From the
National Film and Sound Archive
The National Film and Sound Archive of Australia (NFSA), known as ScreenSound Australia from 1999 to 2004, is Australia's audiovisual archive, responsible for developing, preserving, maintaining, promoting and providing access to a national co ...
.
{{Oceania topic, Speed limits in
Transport law in Australia
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
Road transport in Australia