The G11-10(CA) Begin ESA (Environmentally Sensitive Area) Marker is a California guide & destination sign. Verified against the official Caltrans Sign Specification (G11-10-CA.pdf, rev 09/27/00): the sheet shows BEGIN ESA (vertical; with County/Route/Postmile, e.g. HUM 101 144.44); alternate Line 1: END. Colors: Legend - Black (Non-Reflective); Background - White (Non-Reflective). Standard sizes: 30 in x 8 in.
Applied per the CA MUTCD and Caltrans sign specifications. Confirm placement and supplemental plaques against the applicable CA MUTCD standard.
View this sign on the Federal MUTCD (FHWA)California-specific application notes and adoptions may differ. Review California requirements where applicable.

The G11-10(CA) Begin ESA (Environmentally Sensitive Area) Marker is a California guide & destination sign. Verified against the official Caltrans Sign Specification (G11-10-CA.pdf, rev 09/27/00): the sheet shows BEGIN ESA (vertical; with County/Route/Postmile, e.g. HUM 101 144.44); alternate Line 1: END. Colors: Legend - Black (Non-Reflective); Background - White (Non-Reflective). Standard sizes: 30 in x 8 in.
The G11-10(CA) Begin ESA (Environmentally Sensitive Area) Marker is a California guide & destination sign. Verified against the official Caltrans Sign Specification (G11-10-CA.pdf, rev 09/27/00): the sheet shows BEGIN ESA (vertical; with County/Route/Postmile, e.g. HUM 101 144.44); alternate Line 1: END. Colors: Legend - Black (Non-Reflective); Background - White (Non-Reflective). Standard sizes: 30 in x 8 in. In the field, G11-10(CA) Begin ESA (Environmentally Sensitive Area) Marker 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.
Learn more about Begin ESA (Environmentally Sensitive Area) Marker sign requirementsUsed in California per the CA MUTCD and the Caltrans Sign Specification (G11-10-CA.pdf). Confirm size, retroreflective sheeting, and placement for the specific condition and the reviewing agency.
In Los Angeles, this sign must conform to the CA MUTCD. Work in City of LA right-of-way is reviewed by StreetsLA and the Bureau of Engineering; state highways in LA County are permitted by Caltrans District 7; county roads by LA County DPW.
G11-10(CA) Begin ESA (Environmentally Sensitive Area) Marker is verified against the Caltrans Sign Specification (G11-10-CA.pdf). Confirm its size, sheeting, and placement for the condition. Public Ready can review sign selection against your plan and agency requirements.
Educational 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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