Book

This informative book is designed for students who want to pass the quiz with confidence. Packed with clear explanations and visual examples, it keeps you engaged while helping you learn faster and succeed.

1. 2+1 Road

A 2+1 road is a specific category of three-lane road, consisting of two lanes in one direction and one lane in the other, alternating every few kilometres, and usually separated with a steel cable barrier. The second lane allows faster-moving traffic to overtake slower vehicles at regular intervals. Traditional roads of at least 10 metres (33 ft) width can be converted to 2+1 roads and reach near-motorway safety levels at a much lower cost than an actual conversion to motorway or dual carriageway.

  • Total of 3 lanes: 2 lanes one way / 1 lane the other.
  • Often separated by a barrier or solid line.
  • Designed to improve safety and overtaking opportunities.
  • Lower accident rates compared to standard two-lane roads.
2+1 Road

A 2+1 Road. (Swedish National road 36 north of Linköping) © Wikimedia.org/Skvattram, CC0

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