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Transportation · Compliance · Safety

Post-Incident Drug and Alcohol Testing Flowchart

Type FlowchartStandard Sugiyama layered DAG + orthogonal routingEngine schematex-flowchartUpdated 8/11/2026
Post-Incident Drug and Alcohol Testing Flowchart
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The scenario

A commercial vehicle accident occurs; this flowchart guides the employer and driver through DOT-mandated post-accident testing protocols.

What is in this drawing

Read the decisions behind it.

01

Does the accident meet DOT criteria for mandatory testing?

02

Was the alcohol test completed within 8 hours?

03

Was the drug test completed within 32 hours?

For companies with DOT-regulated drivers following a vehicle accident.

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