| 释义 |
- Canada
- China
- India
- Japan
- United States
The following highways are numbered 309: Canada- Manitoba Provincial Road 309
- Nova Scotia Route 309
- Prince Edward Island Route 309
- Quebec Route 309
- Saskatchewan Highway 309
China- China National Highway 309
India- National Highway 309 (India)
JapanUnited States- U.S. Route 309 (former)
- Arkansas Highway 309
- Connecticut Route 309
- Florida State Road 309 (former)
- Georgia State Route 309
- Kentucky Route 309
- Louisiana Highway 309
- Maryland Route 309
- Minnesota State Highway 309
- Mississippi Highway 309
- New Mexico State Road 309
- New York:
- New York State Route 309
- County Route 309 (Erie County, New York)
- County Route 309 (Westchester County, New York)
- Ohio State Route 309
- Ohio State Route 309 (former)
- Pennsylvania Route 309
-
Pennsylvania Route 309 Business
- South Carolina Highway 309 (former)
- Tennessee State Route 309
- Texas:
- Texas State Highway 309
- Texas State Highway Spur 309
- Farm to Market Road 309
- Utah State Route 309
- Virginia State Route 309
{{Roadindex|309}} |