Title 9. Transportation Systems. Subtitle I. Highways, Bridges, Streets, and Alleys. Chapter 1. Highway Plans. §§ 9-101.01 – 9-115.11 Chapter 2. Street and Alley Closing and Acquisition Procedures. §§ 9-201.01 – 9-221.10 Chapter 2A. Commemoration Task Force. §§ 9-251 – 9-253 Chapter 3. Bridges, Viaducts, and Subways. §§ 9-301 – 9-326 Chapter 4. Street Repair and Construction. §§ 9-401.01 – 9-451.03 Chapter 5. Street Lighting. §§ 9-501 – 9-510 Chapter 6. Removal of Snow and Ice From Streets and Sidewalks. §§ 9-601 – 9-607 Chapter 6A. Block Parties. §§ 9-631 – 9-634 Subtitle II. Airports. Chapter 7. Washington National Airport. §§ 9-701 – 9-707 Chapter 8. Dulles International Airport. §§ 9-801 – 9-813 Chapter 9. District of Columbia Regional Airports Authority. §§ 9-901 – 9-926 Chapter 10. Metropolitan Washington Airports. Subtitle III. National Capital Region Transportation. Chapter 11. National Capital Region Transportation. §§ 9-1101.01 – 9-1117.05 Subtitle IV. Miscellaneous. Chapter 11A. Bus Shelters. §§ 9-1151 – 9-1161 Chapter 11B. Streetcars 2010. §§ 9-1171 – 9-1174 Chapter 12. Miscellaneous Provisions. §§ 9-1201.01 – 9-1219.41