Rockville is a city located in Montgomery County, Maryland, and is considered part of the Washington, D.C. metropolitan area. It is the county seat and is known for its vibrant downtown area filled with shops, restaurants, and entertainment options. Rockville has a rich history dating back to the 18th century when it was settled by European colonists. The city played a significant role in the development of the region's transportation infrastructure, including the construction of the Baltimore and Ohio Railroad in the 19th century.

Freight transportation has always been an important aspect of Rockville's economy. The city is strategically located near major highways and interstates, including Interstate 270 and the Capital Beltway, making it a prime location for distribution centers and logistics operations. The presence of these transportation hubs has attracted numerous businesses to the area, contributing to the city's economic growth and development. Today, Rockville continues to be a major player in the freight transportation industry, with a diverse range of companies specializing in logistics, warehousing, and transportation services.

Commerce City is a city located in Adams County, Colorado. It is a suburb of Denver and is known for its rich history and strong ties to the freight transportation industry. The city was originally founded in the late 19th century as a trading post and railroad stop along the Denver Pacific Railway. This strategic location along the railway made Commerce City an important hub for transporting goods and materials, leading to its rapid growth and development.

Today, Commerce City continues to be a major player in the freight transportation industry. The city is home to several large logistics and distribution centers, as well as numerous trucking companies and freight forwarders. The close proximity to major highways and the Denver International Airport further enhances Commerce City's position as a key transportation hub in the region.