Who is required to register
Under 49 CFR §382.705, every employer of CDL drivers in interstate or intrastate commerce must register, including motor carriers, owner-operators (who register as both employer and employee), and third-party administrators acting on an employer's behalf.
What you're required to do, and when
- Before a new driver's first day — a full query is required before the driver performs any safety-sensitive function, and the driver must give consent before an employer can run it.
- Annually, for every current driver — a query is required at least once every 12 months for drivers already on your team.
- Within 3 days of certain events — employers must report violations, including a confirmed alcohol test of 0.04% BAC or higher, to the Clearinghouse.
Registration and limited queries are free; full queries carry a per-query fee set by FMCSA, which many carriers bundle into a consortium package rather than paying individually.
What a C/TPA is, and whether you need one
A C/TPA (Consortium/Third-Party Administrator) is an organization that manages part or all of an employer's drug and alcohol testing and Clearinghouse obligations on their behalf. Designating a C/TPA is not a federal requirement — an employer can legally handle registration, queries, and reporting directly. In practice, most small and mid-size carriers use one anyway, since it consolidates consortium enrollment and Clearinghouse management into a single point of contact instead of juggling two separate systems.
What actually happens after a violation
The return-to-duty process is stricter than many employers expect, and two details in particular tend to catch people off guard:
- The prohibition follows the driver, not the job. Once a driver is in violation, they cannot perform safety-sensitive duties for any DOT-regulated employer — changing companies does not reset or bypass this. The prohibition only lifts once the full return-to-duty process is complete.
- Employers are not required to pay for the SAP evaluation or treatment. The employer must provide the driver with a list of qualified Substance Abuse Professionals, but covering the cost of that evaluation and any treatment is typically the driver's own responsibility, not the employer's, unless a company policy states otherwise.
The full process, in order: a face-to-face or qualifying remote evaluation with a DOT-qualified SAP, completion of whatever education or treatment the SAP prescribes, a follow-up evaluation confirming compliance, and a return-to-duty test with a negative result before the driver can resume safety-sensitive work. After returning, the SAP sets a follow-up testing plan requiring a minimum of six unannounced tests in the first 12 months, and the SAP can extend follow-up testing for up to five years total.
Setup process
- Employer registration is completed through a Login.gov account, typically activated within one to two business days.
- Your query schedule is set up — pre-employment queries for new hires, annual queries for your current roster.
- Records are retained for a minimum of 3 years per query, satisfying the recordkeeping requirement under §382.701(e).