They have lower speed limits than freeways. They’re mainly found in more rural areas and have traffic signals and pedestrian crossings. County Highway – like the UK’s A and B roads.They have overpasses and underpasses for those wanting to cross the Freeway. Freeway – found in urban areas, these are like UK motorways with controlled slip roads to enter and exit, multiple lanes of traffic and a central reservation barrier dividing the traffic travelling in opposite directions.It finishes off at Wilmington, North Carolina. It’s 2,500 miles long - an incredibly scenic route that includes Little Rock, before heading to the home of country, Nashville, and the home of the Blues, Memphis. Interstate 40 (I-44) cuts through much of the centre of the USA, starting at some old pioneer trails in Barstow, California.From Houlton in Maine all the way to the beaches of Miami, there are 1,920 miles to take in, including New York, Georgia, the Carolinas and New England. Interstate 95 (I-95) crosses the most states in the country, passing through a total of 15 states along the east coast.Following it the entire way will take you through the Pacific Northwest, the Great Plains, Midwest and the Northeast of the USA.

It covers 13 states and over 3,000 miles, starting in Safeco Field in Seattle and finishing at Logan International Airport in Boston. Interstate 90 (I-90) is the longest in the country.Different states set their own speed limits so again, it is worth checking road signs to make sure you’re not falling foul of the limit. Divided roads (a divided road is one that has two clear roadways with a barrier between them) are normally between 55 and 75 mph.Signs on the Freeway will indicate the maximum limit – however please be aware that it varies from state to state, so make sure you check if you’re crossing state lines. On Urban Freeways, the speed limits are dependent on state.In school zones, it drops to between 20-25 mph. The speed limit in residential areas varies from 15 mph to 55 mph.

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