A tour de force behind many economies, the commercial truck industry uses the nearly 7 million kilometers of highway roadways in Canada and America each day. Transporting materials from point a to point b across North America is one of the most efficient methods of transporting commercial goods. In fact, in Canada, the top five ranked destinations for the transportation of trucking cargo all lie in the U.S.; New York, Texas, Pennsylvania, California, and Florida. If a company requires cross continental transporting of their cargo, there are many options for procuring commercial trucks and trailer services. Trailer leasing, trailer rentals, the purchase of trailer parts, trailer sales, and trailer maintenance services are all options. When, however, your trailer parts and contents require refrigeration, there are a few caveats (and modern inventions that make things go a little more smoothly). If the products that a company is transporting are temperature sensitive goods, options such as reefer trailers and its accompany trailer parts should be considered. Things have certainly improved; before the advent of trailer parts that accommodated perishable goods, truckers used large van trailers consisting of ice blocks. This antiquated method required truckers to stop every few hundred miles so that they could refresh their ice. Changes in the trucking industry have led to the ecologically sound development of trailer parts, too. Resulting from the Montreal Protocol of 1987, freon was banned from being included on new reefer trailers and trailer parts. This has led to the manufacturing of environmentally conscious trailer parts and refrigerated trailer.