| Route information | |
|---|---|
| Maintained by Public Works Department (PWD),Puducherry | |
| Length: | 9.123 km (5.669 mi) |
| Major junctions | |
|
RC-18 at Karikalampakkam RC-19 at Embalam |
|
| Location | |
| Districts: | Puducherry, Cuddlore |
| Highway system | |
RC-20 or Thavalakuppam–Embalam Road branches out from National Highways 45A at Thavalakuppam and ends at Embalam.
It is passing through the following villages: