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What do advanced stop lines do?

  1. Regulate traffic speed

  2. Allow cyclists to position in front of traffic

  3. Indicate bus-only zones

  4. Mark pedestrian crossing areas

The correct answer is: Allow cyclists to position in front of traffic

Advanced stop lines, also known as "bike boxes," allow cyclists to safely position themselves in front of traffic at a red light. This gives them a head start when the light turns green and increases their visibility to drivers. Option A is incorrect because advanced stop lines do not regulate traffic speed, but rather provide a safe space for cyclists to stop. Option C and D are also incorrect as advanced stop lines do not indicate bus-only zones or mark pedestrian crossing areas.