Many of the road signs in America look very similar to the ones in Australia that is not the case with speed limit signs. The ones in America are black and white and in miles per hour. In Australia it is a number in black with a red circle around it and is in kilometres per hour. I found it difficult at first to see the speed limit signs in America since I was so accustomed to looking for the signs with the big red ring around them. After several years I got used to the black and white signs but I do miss the ones in Australia.
Most highways in Australia have a 100kph/61mph speed limit or 110kph/66mph on more rural areas and freeways. Speed limits in towns and cities are lower and range from 50kph/31kph to 80kph/50mph. They do seem to change the speed limit a lot in towns and cities so it is important to pay attention so you don't get a speeding ticket. Below are a few examples of the speed limit signs in Australia.
In addition to speed limit signs the speed limits are also on the roads in many places.
110 looks impressive to people who are used to mph but it only translates to 70mph.
Better not speed in this area or you will get a nasty surprise in the mail box.
Better obey the speed limits,
Do you prefer the Australian speed limit signs or the American ones? Do you have different ones where you live?