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Human Factors · Topic 1 of 7 · ~1 min read
The Driver's Code: Observe, Decide, Act
One fact justifies this module's size: the large majority of road crashes — commonly cited as over 90% — trace to human error, not vehicle failure or road defect. The NTSA curriculum agrees with the arithmetic, giving Human Factors more hours than any other unit in the common core. Yet most test-prep skims it, because it doesn't reduce to signs to memorise — which is exactly where understanding beats pattern-matching. Here's the reframe that makes the module cohere. Every module before this was about the road — its rules, junctions, distances, machines. This one is about the driver as a component in the system, one with specific, knowable limits. You can't upgrade the component. But you can learn its failure modes and drive around them, and that is the whole project. This opening lesson gives you the three-stage model everything else hangs on.
In this lesson you'll learn
- Why this is the module that matters most, statistically — and why the curriculum gives it the most hours
- The three-stage model every crash can be traced through: Observe, Decide, Act
- What each stage requires of you, and the characteristic way each one fails
- How the rest of Module 6 maps onto the three stages — a map for the whole module
- Why naming the failed stage is the first step to fixing the behaviour behind it
- 1. The Three StagesDescribe the Observe → Decide → Act sequence and explain why each stage can only be as good as the one before it.
- 2. How Each Stage FailsName the characteristic failure mode of each stage, and explain why alcohol and fatigue are treated separately.
- 3. Why Naming the Stage MattersApply the diagnostic habit — identify which stage failed in a near-miss and derive the fix it prescribes.