Description: This dataset represents the locations and attributes of Department of Public Works (DPW) traffic signals maintained by the Operational Services Division within Los Angeles County jurisdiction. Traffic signals control the movement of vehicles and pedestrians at intersections to enhance safety, manage congestion, and improve overall traffic flow efficiency. This layer was developed to support asset management, field operations, and integration with DPW’s Asset Management System (Trimble Unity Maintain).Field Definitions / Attribute Overview:This dataset contains key attribute fields describing each Traffic Signal asset. Notable/Unique fields include:SIG_TYPE: Identifies the type of traffic signal, such as traffic signal, flasher, rectangle rapid flasher beacon, or driver feedback sign.STATUS: Indicates the current status of the signal.CW_ASSETID: Unique identifier used within the Trimble Unity asset-management system.LOCATION: Describes the intersection where the signal is placed.MAINDIST: Specifies which traffic signal maintenance district the signal is located at.BBS: Battery Backup System, indicates the type of battery backup system unit installed at the signal.TSCABTYP: Identifies the type of traffic signal control cabinet installed at the location.JURISCD1: Describes ownership of the signalJURPER1: Describes percent ownership of the signal.Last Updated 2026
Copyright Text: Contact #1
Name: Haig Minasian
Organization: Los Angeles County Public Works, Operational Services Division
Position: Senior GIS Analyst
Role: Point of Contact
Email: hminasian@dpw.lacounty.gov
Address: 900 s Fremont Ave
City: Alhambra
State: CA
Postal Code: 91803
Phone: (626) 458-7104
Contact #2
Name: Keith Shimizu
Organization: Los Angeles County Public Works, Operational Services Division
Position: Principal Electrical Engineering Assistant
Role: Point of Contact
Email: kshimizu@dpw.lacounty.gov
Address: 900 s Fremont Ave
City: Alhambra
State: CA
Postal Code: 91803
Phone: (626) 458-1700
Description: Background: This is Streetlighting Inventory. This data is owned and created by LA County.Methodology: This data is owned and created by LA County.Field Definitions: ANGLE – Degree in which Lamp is facingICON_TXT- Lumen abbreviation and pole typeICON_ID – Used to identify symbology by System and pole typeLS – System typePOLE_TYPE – Pole materialLUM_ABBR – Lumen abbreviationLUMEN – Lamp size by LumenWATTS – Lamp Size by WattLGHT_TYPE – Lamp TypeSUP_DIST – Supervisorial DistrictPETITION – Petition NumberPROJECT – Project NumberCLMD – County Lighting Maintenance DistrictDATEENR – Date entered in systemSCE_DIST – SCE district NumberSCE_ACCT – Account NumberSCE_POL_I – Pole NumberCITY – CityCOMMENTS – CommentsEFFTRANSD – Effective Transfer DatePROJ_ID – Project IDSCE_DISCR – DiscrepanciesSCE_TYPE – Type of DiscrepancyDISCR_ADDR – Discrepancy AddressFC_BY – Field Checked ByWIRING – Type of WiringPRIVATE_LIGHT – Private LightWTF – AntennaPURCHASEABLE – Purchasable lightsACQUISITION – Acquisitioned lightsDECAL – Decal on LampFROM_SCE – Pole Number Per SCEMAINT_BY – Maintained byPROGRESS_LED – Determines if light is LEDCARRIER – Mobile CarrierLED_C_DATE – LED Conversion DateCOVN_NUM – Conversion Number
Copyright Text: This data is owned and created by TSM
Description: This layer represents DPW Building Facilities within LA County. Primary use of this layer is for asset management and work order tracking within DPW’s Asset Management System (Trimble Unity Maintain). Data was extracted from existing asset data contained in LA County DPW’s outgoing Maintenance Management System. Data was then updated and verified by the Building Crafts Superintendent and Senior Civil Engineer from the Operational Services Division. Some Buildings include, but are not limited to: Warehouses, Division Offices, Storage Buildings, and Yard and Sub-yard Buildings.Notable attribute fields include:CW_ASSETID: Active unique identifiers for each asset, utilized in Trimble Unity Maintain Asset Management System.LABEL: Label of the building, generally containing building number and general usage of buildingSTATUS: Indicates the current status of the buildingBLDG_NOTES: Miscellaneous notes pertaining to asset.USAGE: Intended usage of buildingTENANT1: Name of division occupying buildingLast updated or update frequency: 2026Loaded in 2024 for Trimble Unity (Related Ticket #239876)
Copyright Text: Contact #1 Name: Haig Minasian Organization: Los Angeles County Public Works, Operational Services Division Position: Senior GIS Analyst Role: Point of Contact Email: hminasian@dpw.lacounty.gov Address: 900 s Fremont Ave City: Alhambra State: CA Postal Code: 91803 Phone: (626) 458-7104 Contact #2 Name: Keith Shimizu Organization: Los Angeles County Public Works, Operational Services Division Position: Principal Electrical Engineering Assistant Role: Point of Contact Email: kshimizu@dpw.lacounty.gov Address: 900 s Fremont Ave City: Alhambra State: CA Postal Code: 91803 Phone: (626) 458-1700
