August 22, 2012 3:16 pm DC Taxis Introduce Smart Meters In the next 90 days, all District cabs are expected to install GPS and begin accepting credit credits. Local 2:03 PNC Parkway Classic marks 40 years of racing in Virginia 0:40 Man stabbed to death near Audi Field in DC 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 0:43 American University locked down before man arrested on campus 3:08 Family holds memorial for brothers, 3 and 6, who died after Clifton house fire