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Swiss Driving Theory · RTA / TRO

Visual scanning technique

Seeing is not the same as looking. An experienced driver moves their eyes to a pattern – far ahead, then near, then the mirrors – and picks up situations long before others do.

The three zones

The eyes move constantly between the three zones – they settle in none of them.
Far zone – where am I going?Middle zone – what is happening?Near zone – immediate check

Far zone: as far as the road is visible. It tells you the course of the road, any slowdowns and what lies ahead.

Middle zone: a few seconds in front of you. This is where other people's manoeuvres are decided.

Near zone: immediately in front of and beside the vehicle. A brief check, never a lingering stare.

Remember: anyone fixated on the vehicle ahead is driving blind. The eyes must travel.

Blind spot and shoulder check

Mirrors do not cover everything. On each side there remains an area – the blind spot – in which an entire vehicle can disappear, cyclists and motorcyclists included.

The shoulder check is the only way to verify it: a brief glance over your shoulder, in the direction you intend to go. It is required before:

  • every lane change and every move out,
  • every move off from the kerb,
  • every left or right turn – where cyclists ride,
  • every opening of a door after stopping.

Remember: mirror, then shoulder – in that order, and never one instead of the other.

What impairs vision

  • Speed: the faster you drive, the narrower your field of vision becomes – tunnel vision.
  • Fatigue: the gaze becomes fixed and scanning stops.
  • Glare: after being dazzled the eye needs several seconds to regain sensitivity.
  • Distraction: the eyes are on the road, the attention elsewhere – you look without seeing.

Remember: adjusting your speed is not only about stopping sooner, but also about seeing more.

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