The M9 is a major motorway in Scotland. It runs from the outskirts of Edinburgh, bypassing the towns of Linlithgow, Falkirk, Grangemouth and Stirling to end at Dunblane.
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When the M1 was upgraded to four lanes between the M25 and Luton, the M10 was killed off. Collector-distributor roads were built alongside the M1, and the A414 was routed on what was the M10, up the parallel carriageways alongside the M1 and off to join the next section of A414 at junction 8.
Route 66 became a popular route because of the active promotion of the U.S 66 Highway Association, which advertised it as “the shortest, best and most scenic route from Chicago through St. Louis to Los Angeles.”
I-95 at SR 4When it comes to congestion, Fort Lee takes the top prize for having the busiest highway in the USA. The average speed on the highway is just 29 miles per hour, which is the second slowest on our list. Overall though, this is the most congested stretch of highway in America, avoid it at all costs.