How many traffic signals contractors are licensed in California?

California has 1,559 contractors with a D52 (Traffic Signals) license from the Contractors State License Board. 1,504 (96%) hold active licenses. SiteVetter checks each against SAM.gov, OSHA, DOL, and EPA databases.

What does a D52 license cover in California?

A California D52 license covers traffic signal and street light contractors. Any contractor performing traffic signals work valued at $500 or more must hold this license. The CSLB issues and regulates all contractor licenses in the state.

What percentage of traffic signals contractors have federal violations?

0.6% of California traffic signals contractors (10 out of 1,559) have at least one record in federal databases. These include SAM.gov debarments, DOL wage violations, OSHA safety citations, and EPA environmental violations.

Verify Traffic Signals Contractors (D52) - Page 2 | CSLB + Federal Check

How to Verify a Traffic Signals Contractor (D52) in California

California requires all contractors performing traffic signals work valued at $500+ to hold a valid CSLB D52 license. Of the 1,559 licensed traffic signals contractors in the state, 96% currently hold active licenses and 0.6% have at least one federal compliance record.

Manual vetting takes 45+ minutes per contractor and routinely misses violations in databases most people don't know to check. SiteVetter runs CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, and EPA environmental records in seconds—creating a timestamped compliance artifact.

Verification Checklist for Traffic Signals Contractors

Verify the contractor license is active and in good standing
Request proof of insurance and bonding
Get at least 3 written quotes before selecting a contractor
Check federal databases: SAM.gov, OSHA, DOL, and EPA records
Confirm bond: California requires $25,000+ contractor bond (SB 607)

Why Verification Matters for Traffic Signals Work

Under California's "Controlling Employer" doctrine, general contractors face liability for subcontractor safety violations. For traffic signals work specifically, 0.6% of licensed contractors have federal records that a standard CSLB license check wouldn't reveal. SiteVetter's 5-database check catches what a single-source verification misses.

Traffic Signals Contractor Verification - Page 2

About D52 License

Traffic Signals Contractors

How to Verify a Traffic Signals Contractor (D52) in California

Verification Checklist for Traffic Signals Contractors

Why Verification Matters for Traffic Signals Work