- A374 between A38 and A387, Cornwall excluding Isles of Scilly (Grid ref SX331580)
- A374 between A387 and B3249, Cornwall excluding Isles of Scilly (Grid ref SX340570)
- A374 between B3249 and Thanckes Drive, Torpoint, Cornwall excluding Isles of Scilly (Grid ref SX400547)
- A374 between Thanckes Drive and A374 Fore St/Harvey St, Cornwall excluding Isles of Scilly (Grid ref SX435553)
- A374 between A374 split and ferry, Cornwall excluding Isles of Scilly (Grid ref SX439552)
- A374 between A374 split and ferry, Cornwall excluding Isles of Scilly (Grid ref SX439550)
- A374 between Ferry and Western Approach roundabout, Plymouth (Grid ref SX460544)
- A374 between Union St roundabout and Cobourg St roundabout, Plymouth (Grid ref SX475548)
- A374 between Western Approach roundabout and Charles St roundabout, Plymouth (Grid ref SX478549)
- A374 between Cobourg St roundabout and Exeter St roundabout, Plymouth (Grid ref SX481547)
- A374 between Charles St roundabout and Tothill Rd roundabout, Plymouth (Grid ref SX486545)
- A374 between Tothill Rd roundabout and A379, Plymouth (Grid ref SX491544)
- A374 between spur to A379 and Exeter St roundabout, Plymouth (Grid ref SX494542)
- A374 between A379 and Hele's Terrace, Plymouth (Grid ref SX496545)
- A374 between A379 Laira Bridge Rd and Embankment Rd, Plymouth (Grid ref SX497545)
- A374 between Gdynia Way main route and A379 Laira Bridge Rd, Plymouth (Grid ref SX498544)
- A374 between Hele's Terrace and Gdynia Way, Plymouth (Grid ref SX498546)
- A374 between spur from A379 and Embankment Rd, Plymouth (Grid ref SX498545)
- A374 between Gdynia Way and B3214 mid-junction, Plymouth (Grid ref SX500548)
- A374 between B3214 and A38, Plymouth (Grid ref SX513561)