This guide summarizes the MUTCD requirements and practical application guidance for the G27-2(CA) INTERSTATE ROUTE MARKER WITH STATE NAME (CALIFORNIA INTERSTATE 80) sign. Use this resource to understand when it is required, how to place it correctly, and how to maintain clear visibility for safe operations.
Applied per the CA MUTCD and Caltrans sign specifications
At the decision point, junction, or service location the sign serves, per CA MUTCD Part 2 and Caltrans placement standards.
Mount at the standard height and setback for the roadway with clear sight lines.
High reflectivity and clear sight lines are essential day and night.
The G27-2(CA) Interstate Route Marker with State Name (California Interstate 80) is a California MUTCD sign. Official depiction: Caltrans CA Sign Chart, 2014 Revision 3 (Sheet 10). Official title per CA MUTCD Table 2D-101(CA): “Interstat e (CALIFORNIA) Route Marker” (Section 2D.11, 2D.27). No standalone Caltrans specification drawing is published for this sign. Official depiction: Caltrans California MUTCD 2014 Revision 3 Sign Charts (effective March 10, 2023). No standalone Caltrans specification drawing is published for this sign; the official sign chart depiction is the maximum available official source.
The G27-2(CA) Interstate Route Marker with State Name (California Interstate 80) is a California MUTCD sign. Official depiction: Caltrans CA Sign Chart, 2014 Revision 3 (Sheet 10). Official title per CA MUTCD Table 2D-101(CA): “Interstat e (CALIFORNIA) Route Marker” (Section 2D.11, 2D.27). No standalone Caltrans specification drawing is published for this sign. Official depiction: Caltrans California MUTCD 2014 Revision 3 Sign Charts (effective March 10, 2023). No standalone Caltrans specification drawing is published for this sign; the official sign chart depiction is the maximum available official source. In the field, G27-2(CA) Interstate Route Marker with State Name (California Interstate 80) is typically positioned at the advance warning area, ahead of the work. Common deployments include applied per the CA MUTCD and Caltrans sign specifications; selected and sized for the roadway type and setting; coordinated with the overall signing plan and permit. Always confirm its size, retroreflective sheeting, spacing, and placement against the CA MUTCD 2026 and the reviewing agency before finalizing the traffic control plan.
At the decision point, junction, or service location the sign serves, per CA MUTCD Part 2 and Caltrans placement standards.
Typical minimum: Size varies with legend length and roadway class; set letter height, spacing, and border per the Caltrans Sign Specifications.
Used in California per the CA MUTCD; its official depiction is on the Caltrans CA Sign Chart (2014 Rev 3, Sheet 10). Confirm size, retroreflective sheeting, and placement for the condition and the reviewing agency. No standalone Caltrans specification drawing is published for this sign, so dimensions are not asserted here.
Go to California NotesEducational reference only. This is not an official Caltrans, FHWA, or local agency publication and is not legal or engineering advice. Always verify sign selection, size, placement, spacing, and application against the current CA MUTCD 2026, Caltrans sign specifications, Standard Plans, project documents, and the reviewing agency’s requirements. Local jurisdictions may impose additional requirements, and final selection, placement, and dimensions may require engineering judgment or agency approval. Written against California MUTCD 2026 (effective January 18, 2026) and the Federal MUTCD 11th Edition. Official sources last verified June 2026.
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