Despite postponing the tour's initial six North American shows, AC/DC has tacked a handful of new cities onto its "Black Ice" tour schedule, which kicks off tonight (10/16).

The rock legends will begin the long-awaited second leg tonight (10/16) in Washington, DC--a little more than two weeks after the trek's intended start. The band took the extra time off due to an unspecified medical procedure involving lead vocalist Brian Johnson.

"My insides were giving me lots of trouble, ulcers and such," Johnson posted in a message posted at the band's website late last month. "The doctors looked me over ... In the end they gave me a clean bill of health, but insisted I take a bit of time to recuperate and rest up."

The fall road trip is now slated to hit arenas in 15 major markets along the East Coast and through the South, as well as a stopover in Mexico (11/12) and a final performance in Puerto Rico (12/21). Dallas (11/2), Houston (11/8) and El Paso (11/15) have also been added to the schedule, which is shown below.

"Black Ice," AC/DC's first new studio set in nearly a decade, surfaced last October. The album, which was sold exclusively via Walmart, Sam's Club and the band's website, debuted at No. 1 in 29 countries, including the US.

AC/DC began the "Black Ice World Tour"--the group's first live shows in five years--last October.

According to the group's website, the Black Ice tour will hit Latin America following the forthcoming US dates, and then visit Australia and New Zealand "by early 2010."

The postponed shows in Phoenix; Las Vegas; Louisville, KY; Kansas City, MO; Des Moines, IA; and Milwaukee, WI, will be rescheduled, though the band has not yet issued make-up dates.