Hazard Scanning and Prediction
Building a moving road picture, recognising clues and predicting when change will require speed or direction action.
How to prepare for DVSA PCV Part 1
Apply passenger-vehicle thinking to every rule: check the saloon and exterior, protect boarding passengers and blind areas, drive smoothly, and keep hours and CPC duties in the correct stage.
Core concepts
Concept 1
A developing hazard is something that would cause action such as changing speed or direction.
Exam cue: Scan far enough ahead for PCV stopping distance and passenger comfort.
Concept 2
Effective scanning connects road layout, signs, surface, passengers, other road users and hidden-space clues.
Exam cue: Ask what can enter blind areas or the swept path.
Concept 3
Prediction creates the extra time a large passenger vehicle needs to slow or change plan smoothly.
Exam cue: Refresh the scene as wheels, indicators, people, gaps and signals change.
Risk pitfalls and guardrails
Looking only at the nearest vehicle.
Guardrail: Do not apply car or LGV assumptions without checking passenger capacity, accessibility, service type, blind areas and passenger comfort.
Treating every static object as a scoring hazard.
Guardrail: Written study cannot reproduce Part 1b timing; use current visual practice and avoid continuous or patterned clicking.
Waiting until harsh braking is necessary.
Guardrail: Do not apply car or LGV assumptions without checking passenger capacity, accessibility, service type, blind areas and passenger comfort.
Memory anchors
Development Requires Action
A developing hazard is something that would cause action such as changing speed or direction.
Scan the Whole Scene
Effective scanning connects road layout, signs, surface, passengers, other road users and hidden-space clues.
Prediction Buys Smoothness
Prediction creates the extra time a large passenger vehicle needs to slow or change plan smoothly.
Far Enough Ahead
Scan far enough ahead for PCV stopping distance and passenger comfort.
Blind and Swept Areas
Ask what can enter blind areas or the swept path.
Refresh Every Clue
Refresh the scene as wheels, indicators, people, gaps and signals change.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A parked car is motionless but its driver is visible checking the mirror. What should a bus driver predict?
A football rolls from between parked cars. What is the most important prediction?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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