 The streets of Lancaster, Pennsylvania are old and narrow, with 19th century brick row houses practically on top of each other. That hasn't stopped Mayor Deneen Sirachi from making some 21st century changes. This is another two-way conversion, Secretary. Sirachi led a walking tour for Transportation Secretary Pete Buttigieg last month to show off Lancaster's new protected bike lanes and other changes the city is making in the name of safety, like converting some streets from one-way to two-ways. It's definitely slow traffic.