- Source: List of highways numbered 378
- 153 (angka)
- Massachusetts Bay Transportation Authority
- List of highways numbered 378
- List of highways numbered 1
- List of highways numbered 417
- List of highways numbered 66
- List of state highways in Mississippi
- List of highways numbered 427
- List of highways numbered 401
- List of highways numbered 8
- List of United States Numbered Highways
- List of highways numbered 409
The following highways are numbered 378:
Canada
Saskatchewan Highway 378
Japan
Japan National Route 378
United States
Interstate 378 (former)
U.S. Route 378
Georgia State Route 378
Louisiana Highway 378
Maryland Route 378 (unsigned)
Nevada State Route 378 (former)
New Mexico State Road 378
New York State Route 378
Ohio State Route 378
Pennsylvania Route 378
Puerto Rico Highway 378
Virginia State Route 378