Leslie Massey
Australia's transition from miles to kilometres, also known as metrication, occurred in July 1974. This change was facilitated by the Metric Conversion Board, which aimed to standardise measurements across the country. The transition involved altering road signs, speed limits, and distance measurements to align with the metric system. The process was carefully planned, and public education campaigns were implemented to ensure a smooth transition and prevent potential accidents during the changeover period. This shift towards metric units brought Australia in line with other countries that had already adopted the metric system, marking a significant step towards standardisation and uniformity in measurements.
| Characteristics | Values |
|---|---|
| Date of change from miles to kilometres | 1 July 1974 |
| Planning | Metric signs were installed alongside imperial signs before the change |
| The imperial signs were replaced with metric signs during the month of conversion | |
| Television advertisements | Two advertisements were produced to facilitate the change |
| The advertisements were broadcast during peak evening viewing times on national television and major capital city television networks | |
| Cost of publicity campaign | $200,000 |
| Early metrication | Horse racing, including the Melbourne Cup, changed to metric in November 1972 |
| Weather forecasts were provided in both Fahrenheit and Celsius for one month only | |
| Metric units were specified for use in the construction industry in 1974 |
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What You'll Learn
The change officially occurred in July 1974
The change from miles to kilometres in Australia officially occurred in July 1974. This was a significant shift for the country, as it transitioned from the imperial system of measurement to the metric system. The change was implemented by the Metric Conversion Board, which played a crucial role in the process.
The move towards metrication in Australia had been building up over time, with early changes taking place in specific sectors. For instance, horse racing underwent metrication before the official switch, with the Melbourne Cup being changed from a 2-mile race to a 3,200-metre race in 1972. Additionally, the Australian Bureau of Meteorology adopted the metric system for weather reporting and forecasts, with creative jingles being used to educate the public about temperature sensations in degrees Celsius.
As the official change approached, careful planning was undertaken to ensure a smooth transition. This included the installation of covered metric signs alongside imperial signs before the changeover, which could then be easily unveiled when the time came. Television advertisements were also employed to facilitate the change on Australian roads. These ads emphasised the importance of learning the metric equivalents of existing miles per hour speed limits, especially since older vehicles still used imperial measurements.
The conversion to metric motoring commenced on 1 July 1974 across all states and territories of Australia. The new kilometre signs featured a distinct design, with the speed limit inside a red circle, similar to the style used in Europe. To aid the transition, temporary yellow plates displaying the corresponding number of miles were affixed to the new kilometre signs on minor roads. These plates were typically removed after about a year.
The change from miles to kilometres in Australia was part of a broader shift towards standardisation and alignment with international systems of measurement. While there were challenges and adjustments during this period, careful planning and public education helped ensure a successful transition to the metric system in 1974.
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Public education was key to the transition
Australia changed from miles to kilometres in July 1974. The transition was facilitated by a combination of careful planning and public education initiatives.
Public education was indeed key to the transition. The Metric Conversion Board, for instance, produced television advertisements to facilitate the change to metric measurements on Australian roads. These advertisements emphasised the importance of learning the metric equivalents of existing miles per hour speed limits, especially since speedometers in older vehicles remained imperial. The advertisements were broadcast during peak evening viewing times on national and major capital city television networks for five days, from three days before the changeover day to two days after.
The Australian Bureau of Meteorology also played a role in public education. When the Bureau introduced the metric system for weather reporting and forecasts, its public relations officer, Godfrey Wiseman, coined jingles using terms like "frosty fives" and "fiery forties" to describe human sensations to temperatures in degrees Celsius. This campaign was very successful, with weather reports and forecasts in both Fahrenheit and Celsius provided for one month only.
In addition to these initiatives, a Panel for Publicity on Road Travel, comprising various motoring organisations, regulatory authorities, and the media, planned a publicity campaign to communicate the change to the public. This campaign cost $200,000.
The transition was also facilitated by the fact that most drivers under the age of 25 had been taught metric units at school, and through them, their parents became familiar with metric speeds.
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Road signs were changed within a month
Australia's transition from miles to kilometres took place in July 1974. The process was facilitated by a 60-second television advertisement, which was broadcast during peak evening viewing times on national television for three days before and two days after the changeover. The advert emphasised the importance of learning metric equivalents to existing miles per hour speed limits, as speedometers in older vehicles remained imperial. It also highlighted the different appearance of the new signs.
The conversion to metric motoring commenced on 1 July 1974, with almost every road sign in Australia being converted within a month. This was achieved by installing covered metric signs next to the imperial signs before the change and then removing the imperial sign and revealing the metric sign during the month of conversion. The previous mph signs were black on white and rectangular, in the same style as current US speed limit signs, while the new km/h signs featured the speed limit inside a red circle, as is done in Europe.
To avoid confusion, new major distance signs had a temporary yellow plate affixed to them, displaying the symbol 'km'. These plates were removed after about a year. The Metric Conversion Board believed that the advertising campaign was primarily for public relations rather than education, with the media providing the latter through the newsworthiness of the issue.
The transition to metric measurement in Australia began earlier in some sectors. For example, the Melbourne Cup horse race changed from 2 miles to 3,200 metres in November 1972. Additionally, the Australian Bureau of Meteorology introduced the metric system for weather reporting and forecasts, with a public relations officer coining jingles to educate the public about temperature in degrees Celsius.
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Metric units were taught in schools
Australia's transition from miles to kilometres, or "metric motoring", officially occurred on 1 July 1974. This change was accompanied by a public education campaign to ensure that potentially dangerous accidents did not occur during the transition period. One of the main concerns was that drivers would not know the metric speed limits, leading to road accidents. However, this did not occur, partly because most drivers under 25 had been taught metric units at school and could educate their parents.
The Australian Bureau of Meteorology also played a role in introducing the metric system for weather reporting and forecasts. The public relations officer, Godfrey Wiseman, created catchy jingles to help the public understand the new temperature measurements in degrees Celsius. For example, "frosty fives" and "fiery forties" described human sensations at different temperature ranges.
The transition to metric units in schools was likely a gradual process that began in the 1960s or early 1970s. By the mid-1970s, students were being taught the metric system, as evidenced by the need to educate younger drivers about metric speed limits during the 1974 road sign change. This suggests that metric units had been incorporated into the school curriculum several years prior to the official change from miles to kilometres.
The teaching of metric units in schools was likely influenced by international trends and Australia's ties to the British Empire and the Commonwealth. At the time, many countries were transitioning to the metric system, and Australia's close relationship with the United Kingdom, where the metric system was already in use, may have accelerated the adoption of metric units in Australian schools. Additionally, Australia's increasing engagement with Asian markets and economies, such as China, Japan, South Korea, and Taiwan, where metric units were standard, may have further emphasised the importance of teaching metric units in schools.
Overall, the transition to metric units in Australia, including in schools, was a well-planned and communicated process that occurred over several years. The public education campaigns and the early adoption of metric units in schools contributed to a smooth transition, ensuring that Australians were familiar with the new measurement system before the official changeover.
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Metrication of horse racing occurred in 1972
Australia's transition from miles to kilometres, or "metric motoring", officially occurred on 1 July 1974. This change was accompanied by a public education campaign, which included television advertisements, to ensure that potentially dangerous accidents did not occur during the transition period.
However, the metrication of horse racing occurred earlier, in 1972. The Melbourne Cup, for example, was changed from a 2-mile race to a 3,200-metre race, a reduction of 19 metres or about 0.6%. The first metric Melbourne Cup was held in November 1972.
The metrication of horse racing was facilitated by the fact that a furlong (one-eighth of a mile) is close to 200 metres. This meant that the conversion from miles to kilometres for horse racing distances was relatively straightforward, with minimal changes to the actual length of the races.
The metrication of horse racing in Australia was an early step in the country's transition to the metric system. By 1974, when the official change to metric motoring occurred, many other industries and sectors had already begun to adopt metric units. For example, the construction industry had adopted the Standard AS 1155-1974 "Metric Units for Use in the Construction Industry", which specified the use of millimetres as the small unit for the metrication upgrade.
The transition from miles to kilometres in horse racing was a significant step in Australia's shift towards the metric system. It demonstrated the country's commitment to metrication and set the stage for the wider adoption of metric units in other areas of society, such as road signage and speed limits, which would follow in the coming years.
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Frequently asked questions
Australia changed from miles to kilometres in July 1974.
To prepare for the change, the Metric Conversion Board produced two television advertisements to facilitate the change to metric on Australian roads. The advertisements emphasised the importance of learning the metric equivalents to the existing miles per hour speed limits and the different appearance of the new signs.
Metric signs were installed alongside imperial signs before the change. Then, during the month of conversion, the imperial signs were removed and the metric signs were uncovered.
