Some of the roadblocks are due to widening projects as the Arizona Department of Transportation advises caution while driving in work zones.

What's The Biggest US City With No Freeways? The US is a very highway-focused country, being widely developed after the introduction of the automobile, and likely being modeled with these vehicles in ...

Waymo is expanding driverless rides to freeways. Starting Wednesday, passengers in San Francisco, Phoenix and Los Angeles can get to their destinations more quickly as the self-driving company opens ...