One issue I see with a change is the miles per hour. I google searched the average mph for road signs, here is what they are in kilos.
25 mph (average school zone speed) is 40.23 kph
30 mph (average residential area speed) is 48.28 kph
45 mph (average road speed) is 72.42 kph
55 mph (average parkway speed) is 88.51 kph
65 mph (average highway speed) is 104.6 kph
75 mph (maximum highway speed) is 120.70 kph
88 mph (speed to make a Delorean go back into the past or future) is 141.62 kph
FYI, the five mph window for speeding would turn into a 8.05 kph window
As you can see, this would DRASTICALLY change the US road system if this was used. Not only will tax payers need to pay for more road signs (if not removal of old signs) we will now need to know the new speeds and the windows.
Personally, the way things are while not great are simpler to understand because that is the way that it is. Could something better come along, yes. I don't see the metric system as the answer to a kind of messed up American system.
And FYI, to OneLess, normally Americans when using the Imperical System do not swap between miles and feet. The only thing Americans will do is swap between feet and inches just because of the size issues.
Quote:
How many Americans could tell me without using calculator/research....
58 ft = ? Miles
875 in = ? yards
80 lbs = ? Oz
120 Oz = ? gallons
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I will try, let's see the first is a bait for calculations or research.
36 inches in a yard (12 inches per foot, three feet per yard) 36 goes into 87 about 2 times, leaving 15 to become 155 (after dropping the 5), 36 goes into 155 about 4 times leaving a remainder of 11. so you get more than 24 yards.
80 lbs into ounces, at 16 ounces per pound you get 1280.
120 ounces is less than 1 gallon (128 ounces per gallon) (NOTE: had to double check that)
While yes, it is easier to convert say litres into kilolitres, the issue is the changes to the system as we have many situations that would be altered such as the speed limits and the distance to exits. Am I saying Americans are "dumb," no. You just to realize a quick change is going to fail, just look at metric conversion under Ford/Carter compared to the UK's method.