G20-4 — Pilot Car Follow Me
Sign Specifications
| Code | G20-4 |
|---|---|
| Name | Pilot Car Follow Me |
| Category | Guide |
| Shape | Rectangle |
| Color | Orange / black |
| CA status | Recognized in the California MUTCD (2026) |
| MUTCD reference | § 6F.59 (MUTCD 11th Edition) |
| CA MUTCD reference | California MUTCD (2026) |
What This Sign Means
The G20-4 Pilot Car Follow Me sign is an orange guide sign with a black legend. It provides guide information that frames the limits of a work zone for road users.
California Field Use
- Marks the beginning or end of an extended work zone on the TCP.
- Helps set driver expectations on long or multi-phase projects.
Where It Goes on a TCP
Advance-warning area (start) and termination area (End Road Work) — framing the work zone.
MUTCD Requirements
The G20-4 Pilot Car Follow Me is addressed under Part 6 (Temporary Traffic Control) of the MUTCD 11th Edition (MUTCD § 6F.59). Read the governing standard, guidance, option, and support text in the official MUTCD before applying it.
California Requirements
California adopts this sign through the California MUTCD, sometimes with state-specific sizing or application notes. A common conventional-road size is 48 x 24 in; larger sizes apply on expressways and freeways. Confirm the size and application for your facility against the current CA MUTCD (2026) and the Caltrans sign specifications and Standard Plans.
| Application | Standard Size |
|---|---|
| Conventional Road | 48 x 24 in |
| Oversized | 60 x 30 in |
| Minimum | 36 x 18 in |
Common Plan Review Comments
- End Road Work (G20-2) missing at the downstream end.
- Stated work-zone length does not match the plan.
- Sign left up after the work area is removed.
Compliance Notes
- Stated length matches the field.
- End Road Work present at the downstream limit.
Related Signs
Related Compliance Topics
Learn more in Lane Closures and Detours.
This is an educational reference only. Always verify sign selection, size, placement, and application against the current CA MUTCD 2026, Caltrans sign specifications, Standard Plans, project documents, and the reviewing agency's requirements.