Practice question
What training topic is mandatory for traffic control technicians responsible for installing lane closures on high-speed freeways?
- Residential HVAC duct sizing and refrigerant handling.
- Architectural interior building code drafting standards and plan review procedures.
- Caltrans Standard Plans T9-T17 and safe device placement/removal protocols.
- Commercial landscaping plant selection and irrigation.
Answer: C — Caltrans Standard Plans T9-T17 and safe device placement/removal protocols.
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Practice more: C-31 Traffic Control Practice Questions - California CSLB C-31 Construction Zone Traffic Control Examination Exam →