Post-Accident Testing: the 8-Hour and 32-Hour Clocks

The three triggers: fatal, injury plus citation, tow plus citation

382.303 applies to an occurrence involving a commercial motor vehicle operating on a public road in commerce. The employer's duty runs to each surviving driver who was performing safety-sensitive functions with respect to that vehicle. The regulation's own table has three rows. A human fatality: test whether or not the driver was cited. Bodily injury with immediate medical treatment away from the scene: test only if the driver is cited. Disabling damage to any motor vehicle requiring a tow: test only if the driver is cited.

Disabling damage means the vehicle had to be transported from the scene by a tow truck or another vehicle. A scratch that the truck drove away from is not that row. An injury that was treated at the scene and did not require immediate treatment away from the scene is not the injury row. Read the row before you order a federal test. Ordering one when the table says no is how a company test gets mislabeled as DOT.

The section does not apply to boarding or leaving a stationary vehicle, to loading or unloading cargo, or to certain passenger-car operations the exception names. A dock injury while loading is not automatically this test. Do not stretch the table to every incident on the property.

The longer story of a post-accident file is post-accident drug testing for CDL drivers. Stay on this page for the yes-or-no and the hours.

Fatal does not wait for a citation

If the accident involved the loss of human life, the employer tests the surviving driver who was performing safety-sensitive functions. The table's fatality row says the test is required both when a citation is issued and when it is not. Waiting for a police decision about fault does not delay that duty. As soon as practicable means as soon as practicable. It does not mean after the lawsuit is analyzed.

Identify the driver who was performing the safety-sensitive function. A co-driver in the sleeper is not automatically the tested driver. The driver who was operating, or otherwise performing the safety-sensitive function with respect to the vehicle, is. Do not test the wrong person and skip the right one. Do not skip both because the scene is chaotic. Assign someone in the company to start the clock and the record while the driver gets medical care.

Alcohol: stop trying at 8 hours

If an alcohol test is required, try to administer it promptly. 382.303(d)(1) says if it is not administered within two hours, the employer prepares and keeps a record of why it was not promptly administered. If it is not administered within eight hours, the employer ceases attempts and prepares and keeps that record. Records are submitted to FMCSA on request. The two-hour note and the eight-hour stop are both real. Do not skip the note because you still hope to test at hour three. Write it, then keep trying until hour eight if you must.

At eight hours, stop. A test you push through at hour ten is not the DOT post-accident alcohol test this section required. It may be some other test. Do not put it on a federal form as if the clock were a suggestion. Alcohol dissipates. That is why the window is short. A missed window is documented. It is not repaired by a late blow.

Nothing in the eight-hour rule tells you to delay medical treatment. Get people care. The record can say the driver was in surgery. That is a reason. I forgot to call the consortium is also a reason, and it is the kind you do not want to write. Call immediately.

Drugs: stop trying at 32 hours

Controlled-substance attempts stop at 32 hours. 382.303(d)(2) says if the test is not administered within 32 hours, the employer ceases attempts and prepares and maintains a record of why. There is no separate two-hour drug note in that paragraph. There is a hard stop at 32. Count from the accident, not from the moment you found a clinic and not from the moment a citation arrived, except that on the injury and tow rows you do not have a DOT test to give until the citation exists. If the citation arrives at hour 30, you have two hours left in the drug window, not a fresh 32. If it arrives at hour 33, the drug window has closed. Document that.

The citation window in the regulation is tied to the test duty: a citation within 8 hours for the alcohol branch and within 32 hours for the drug branch, for a moving violation arising from the accident. A citation next week does not reopen the clocks. Do not hold the driver in a motel for days hoping a citation will appear after the windows have died and then run a DOT test. That is not 382.303.

A law-enforcement test can meet the requirement if it conforms to the applicable requirements and the employer obtains the results, which is 382.303(g). Ask for those results. Do not assume the police test replaced yours if you never receive it. If you do not receive it and your own window is still open, continue your own attempt. If the window has closed, write that down.

Document why a test did not happen

The record is a short factual note. Time of the crash. Time you learned a test was required. Clinics you called. Whether the driver was in emergency care. Whether a citation had been issued. Why the test was not done by two hours, by eight, or by 32. Sign it and file it with the accident packet. FMCSA can ask for it. An auditor will ask for it when the crash register shows a tow and the drug file shows nothing.

Do not destroy the note because the outcome was embarrassing. The note is the compliance act when the test could not be done. A missing note plus a missing test is two holes. A present note plus a missed test is the documentation the paragraph demands.

The driver must remain readily available for testing or the employer may deem the driver to have refused, under 382.303(e). That sentence has an exception for necessary medical attention and for leaving the scene to get help. It is not a pass to go home and sleep off the day when you are uninjured and a test is required. Tell the driver to stay available. Tell them where to go. Give drivers the post-accident instructions before they ever operate, which 382.303(f) already requires. The night of the crash is a bad time to invent the policy.

What a company policy can add, and what it cannot call DOT

Many carriers test after events the DOT table does not cover: a tow with no citation, a gate scrape, a customer demand. That can be a company-policy test. It is not a DOT test. Keep it off the federal custody-and-control form. Do not tell the collector to run it as a DOT post-accident test. Do not report a positive company test to the Clearinghouse as a DOT violation. The Clearinghouse is for DOT tests and DOT refusals. Mixing the two creates a false federal record, which is worse than the scrape that started the night.

If the table flips to yes because a citation is issued inside the window, then you are in DOT territory and the company test does not count in its place unless it was actually a DOT test. Decide which program you are in before the cup is handed over. You cannot convert a non-DOT test into a DOT test after the fact because the citation arrived later.

Use two lines in the crash file. DOT test required: yes or no, and why. Company test required by our policy: yes or no. Fill both. If the first line is no, the eight-hour and 32-hour DOT clocks are not running. If the first line is yes, they are, and the documentation rules above apply. Do not merge the lines into one box labeled drug test. That merge is the mistake this page exists to stop.

Train the night dispatcher on those questions before a crash, using 382.303's table and not a laminated slogan that says test every accident. The slogan produces federal forms on crashes the rule does not cover, and it produces silence on fatalities while people argue about fault. The table is short. Put it in the crash envelope.

Frequently Asked Questions