OM3-L Object Marker (Type 3) Sign
A striped Type 3 object marker used to mark the end of a roadway or a substantial obstruction, with stripes indicating the direction to pass.
| Sign code | OM3-L |
|---|---|
| Federal code | OM3-L |
| Name | Object Marker (Type 3) |
| Category | Object Markers |
| Shape | Rectangle (Vertical) |
| Color | Alternating yellow and black stripes |
| California status | Used in California per CA MUTCD |
| Typical CA minimum size | Per CA MUTCD object-marker standards |
What This Sign Means
A striped Type 3 object marker used to mark the end of a roadway or a substantial obstruction, with stripes indicating the direction to pass.
California Temporary Traffic Control Use
Used in California at the end of a closed roadway or on barricades to mark a full obstruction and direct traffic to the open side.
Common TCP Context
- Marking the end of a closed roadway
- Mounted on barricades at closures
- Directing traffic around full obstructions
California Size Requirements
Typical minimum: Per CA MUTCD object-marker standards.
Sizes are CA MUTCD minimums and vary by roadway classification and speed. Verify against the CA MUTCD 2026 (CA MUTCD Part 3F (Object Markers)), Caltrans sign specifications, and the reviewing agency.
Common Placement on a TCP
Where it sits: Advance warning area, ahead of the work.
CA MUTCD reference: CA MUTCD Part 3F (Object Markers).
Los Angeles Area Usage Notes
In Los Angeles, this sign must conform to CA MUTCD 2026. Work in City of LA right-of-way is reviewed by StreetsLA and the Bureau of Engineering (BOE); state highways in LA County are permitted and reviewed by Caltrans District 7; county roads are permitted by LA County DPW. Sizes, retroreflectivity, and placement must meet CA MUTCD minimums — local agencies may require larger signs based on roadway class, speed, pedestrian volume, and proximity to schools or transit.
Common Plan Review Comments
- Object marker omitted on a hazard that remains near traffic.
- Stripe direction does not guide traffic to the correct side.
- Marker type not appropriate for the obstruction.
- Delineation not continuous with the channelizing devices.
Plan Review Notes
Confirm Type 3 markers are used at closures and roadway ends with the correct stripe direction. Public Ready reviews closure delineation.
Signs Commonly Used Together
These signs are typically deployed alongside OM3-L on a California TCP.
Rent or Purchase This Sign
Marking a roadway end or closure? Public Ready can supply Type 3 object markers and barricades.
Official References
- California MUTCD (Caltrans)
Free official resource — opens official government website
- Federal MUTCD (FHWA)
Free official resource — opens official government website
- Caltrans Sign Charts
Free official resource — opens official government website
- FHWA Standard Highway Signs
Free official resource — opens official government website
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.
Related Signs
Need signs for a California project?
Need to rent, purchase, or include traffic control signs on a California project? Public Ready can help with sign rental, purchase, sign packages, TCP sign legends, and permit coordination.