News bites: Airport art

Your morning transportation speed-read:

The number of airport art galleries is on the rise.

The union for janitors at Chicago’s O’Hare International Airport is fighting the city’s mayor, Rahm Emanuel, over a new contract.

The Republican who provided the decisive vote in favor of Washington, D.C.’s MetroRail expansion to Dulles Airport has provided an explanation of his decision.

California is seeing an uptick in the number of electric cars driving on its roads.