DS 334 Form – The DS 334 Form (also known as the Positive Controlled Substance Test Result Report) is an official California DMV document used by specific employers to report positive drug test results, test refusals, or non-compliance for certain commercial drivers and applicants. This form plays a critical role in maintaining safety standards for pupil transportation, paratransit, and transportation of developmentally disabled persons.
If you are searching for the DS 334 form PDF, official instructions, or details on how to submit it, this guide covers everything based on the latest available California DMV resources.
What Is the DS 334 Form?
The DS 334 Form is the Positive Controlled Substance Test Result Report approved by the California Department of Motor Vehicles (DMV). It is specifically designed to document and report instances where a driver or applicant in designated safety-sensitive transportation roles tests positive for controlled substances, refuses a required test, or fails to comply with testing protocols.
The current official version is DS 334 (REV. 4/2016), available as a fillable PDF directly from the DMV. It remains the approved form for compliance reporting as of 2026.
Purpose of the DS 334 Positive Controlled Substance Test Result PDF
California Vehicle Code (CVC) §13376(b)(1) mandates that employers providing pupil transportation, general public paratransit, or transportation services for developmentally disabled persons must report any driver or applicant who:
- Receives a positive test for a controlled substance, or
- Fails to comply with required testing.
Additionally, CVC §13376(b)(3) requires the carrier that requested the test to report refusals, failures to comply, or positive results no later than five days after notification. Rehabilitation or return-to-duty programs must also use this form to report subsequent positive tests or program drops.
The form ensures the DMV receives timely notification to protect public safety and enforce federal testing standards under 49 CFR Part 382.
Who Must Use the DS 334 Form?
The DS 334 Form is required for:
- Employers in pupil transportation (e.g., school bus operators)
- Providers of general public paratransit services
- Operators transporting developmentally disabled persons
- Rehabilitation or return-to-duty programs handling existing certificate holders
Testing must follow federal regulations in 49 CFR Part 382. The form applies to both new applicants and current certificate holders with commercial driving certifications related to these services.
How to Complete the DS 334 Form: Step-by-Step Instructions?
Complete the form legibly (type or print). It includes three main sections:
Section 1 – Driver Information
- Driver’s full name, birthdate, driver license number, address, and phone
- Certificate details (expiration/renewal or original application date, certificate type)
- Testing agency name, address, phone, reason for test (pre-employment, post-accident, reasonable suspicion, random, return-to-duty, or follow-up), test date, and results/refusal
- Employer name, address, and phone
Section 2 – Rehabilitation/Return to Duty Program Information (for existing certificate holders only)
- Program name/address, length, start date, and employer imposing the program
Section 3 – Post Program Drops
- Details of any positive test after program entry, reason for drop, and reporting individual information
Sign and date the certification statement at the bottom. The person reporting must confirm the information is accurate per CVC §13376(b)(1).
Where and When to Submit the DS 334 Form?
Mail the original form no later than five days after receiving notification of the positive result or refusal to:
Driver Safety Actions Unit
Attn: Special Certificate
2570 24th Street, MS J234
Sacramento, CA 95818-2526
Send a copy to your local California Highway Patrol (CHP) Area Office, Attn: School Bus Officer/Coordinator.
Official DS 334 Form PDF Download
Direct download the latest official DS 334 Positive Controlled Substance Test Result PDF here:
https://www.dmv.ca.gov/portal/uploads/2025/05/DS-334-R4-2016-ASB-WWW.pdf
This is the current DMV-approved version. Always verify you are using the most recent upload from the official DMV website before submitting.
Common Reasons for Testing on the DS 334 Form
The form requires you to specify one of these federally compliant reasons:
- Pre-employment
- Post-accident
- Reasonable suspicion
- Random
- Return to duty
- Follow-up
Accurate selection ensures full compliance with both state and federal drug and alcohol testing rules.
Related DMV Forms and Regulations
The DS 334 Form works alongside other DMV requirements for commercial drivers, such as medical examination reports. For broader controlled substance testing policies, refer to California Vehicle Code §13376 and 49 CFR Part 382. Employers should maintain detailed records of all testing to support DS 334 submissions.
Frequently Asked Questions About the DS 334 Form
Is the DS 334 Form only for school bus drivers?
No. It applies to pupil transportation, paratransit, and developmentally disabled transport operators.
Can I submit the DS 334 Form electronically?
No. The DMV requires mailing the original form (with a copy to CHP).
What happens if I miss the 5-day deadline?
Late submission may result in non-compliance penalties under CVC §13376. Timely reporting is mandatory.
Where can I find the official DS 334 instructions?
The form itself includes all necessary fields and legal references. Full guidance is available on the DMV forms page.
Why Compliance with the DS 334 Form Matters?
Accurate and timely use of the DS 334 Positive Controlled Substance Test Result PDF helps protect California’s roads, ensures public safety for vulnerable passengers, and keeps employers in full legal compliance. Failure to report can lead to certificate actions or other enforcement measures by the DMV and CHP.
For the most current information, always download the form directly from the California DMV website and consult the latest CVC §13376 requirements.
Official Download Link (again for convenience):
DS 334 Form PDF – Positive Controlled Substance Test Result
Stay compliant. Stay safe. Use the official DS 334 form for all required reporting.