Highways, streets, and sidewalks get most Pittsburghers to and from work. On this month’s episode of 90.5 WESA’s series Still Working, though, roads themselves are essential to the workplace. Jill Smallwood drives a bus for the Port Authority of Allegheny County. John Spellman operates the “Shady Dog” hot dog cart in Shadyside. And Steve Smith makes road signs at Allegheny County’s sign shop.