3.1 Observation, Communication & Hazard Recognition

Build a Repeatable Search Process

Defensive driving begins before a hazard becomes an emergency. The current handbook advises scanning at least 10 seconds ahead while also checking mirrors and the sides. The exact visible distance changes with speed and road shape; the useful habit is to move the eyes, search the developing path, and revisit mirrors often enough to keep a current picture.

OL 235 identifies SIPDE and the Smith System among the defensive-driving topics an instructor candidate should understand. Treat them as organizing frameworks, not magic incantations. SIPDE can be taught as Search, Identify, Predict, Decide, Execute. Smith concepts emphasize looking well ahead, seeing the whole scene, keeping the eyes moving, leaving an escape option, and making sure others can see the vehicle. A candidate should explain what each behavior accomplishes rather than claim that one exact eye-movement interval is mandated by law.

Search by Zones

Search the target path first: traffic controls, lane changes, brake lights, gaps, surface hazards, and sight restrictions. Then search the near path for immediate position and the mirrors for traffic behind and beside. Recheck the relevant blind spot before a lateral move. At an intersection, search left, right, left while also checking crosswalks and the intended turn path. A green signal does not remove the need to search.

Identify clues rather than waiting for motion. A rolling wheel beneath a parked car, a driver's head movement, exhaust from a driveway, a person at a curb, a bouncing ball, or a truck drifting toward a line may signal a developing conflict. Classify the clue by its effect: Will it enter the path? Remove visibility? Reduce grip? Require more stopping space?

Predict, Decide, and Act Early

Prediction is a short list of plausible changes, not a declaration that another driver will make one move. Decide on the lowest-risk response: ease off the accelerator, increase following distance, change lane when legal and useful, cover the brake, communicate, or stop. Execute smoothly and continue searching because the first prediction may be wrong.

Communication includes signals, brake lights, lane position, horn, headlights when lawful, and eye contact. Use the horn to warn, not punish. Never rely on eye contact alone. Position the vehicle where it is visible and avoid staying beside another vehicle. At night or in poor weather, proper lights help the driver see and be seen, but high beams must be managed around other road users.

Teaching Commentary

Commentary driving makes thinking observable. The student briefly names the control, hazard, likely development, and chosen response: "Parked van blocks the right crosswalk; easing off and moving left within my lane." The instructor listens for missing users and asks a targeted question. Commentary must remain short enough that speaking does not become its own distraction.

The exam may use either framework's vocabulary. Translate the label into an observable behavior and safety purpose.

Calibrate the Search

Scanning does not mean moving the eyes randomly. Give the student a purpose for each glance and occasionally ask for the most important developing hazard. If commentary becomes a catalog of signs and storefronts, redirect it to path, visibility, movement, and escape. If mirrors are ignored, ask what has changed behind since the last decision. At a safe stop, compare what student and instructor noticed without turning the exercise into a memory contest. The goal is a timely traffic model that supports action, not perfect recall of every object.

Vary the search exercise at curves, hillcrests, parked-car corridors, and multilane intersections. The student should recognize that a blocked zone deserves more attention even before a person or vehicle appears. Score the timing of the response: noticing after hard braking begins is different from identifying the same clue early enough to slow smoothly.

Recognize an Unpredictable Driver Without Diagnosing

OL 235 also expects candidates to address drivers whose behavior suggests impairment. Treat weaving, unexplained speed changes, delayed signal response, or inconsistent lighting as risk clues, not proof of a particular substance. Increase space, avoid passing unless a clearly safe path exists, and leave the road or change route when needed. If the conduct creates an immediate danger, have a passenger make the emergency call or stop legally before calling; do not use a handheld phone while driving.