Why should driving instructors avoid using vague directional terms like 'Turn right over there' and instead use precise landmarks and distance markers?

1. Vague terms are legally mandatory under cantonal ordinances
2. Driving instructors are forbidden from using street names
3. Precise instructions (e.g. 'At the upcoming roundabout, take the second exit toward Bern') provide clear situational orientation, prevent sudden last-second panic maneuvers, and allow timely scanning/signalling
4. Learners must guess what the instructor wants to build intuition