Tractor trailer trucks can be intimidating. These large, 18-wheeler
trucks tower over our cars and weigh 30 times more than the average
vehicle. There seems to be more of these massive trucks than ever as
well – and you’re right.
In the last 40 years, the number of tractor trailers has more than doubled.
In 1970, there were 905,082 tractor trailers. By 2008, that figure had
skyrocketed to 2,215,856. The number of all large trucks (vehicles over
10,000 pounds) has also...
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