Road traffic rules in English

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The zip-merging system

In Belgium, the zip-merging system should be used when a lane closure results in very slow-moving traffic. What is it?

  • Drivers should use the available lanes until the point of closure. (Merging hundreds of metres before the lane closure serves no purpose).
  • The vehicles in each lane should travel at the same speed.
  • At the point of the closure, those in the lane that is remaining open must give way in turns to the vehicles merging in.

Used correctly, the zip-merging system makes roads safer and allows traffic to flow more smoothly.

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