Green Acoustic Signal with Fast Pulse Frequency
The signal indicates that you may proceed
When You See This Sign
The sign indicates that the location is equipped with a green acoustic signal that sounds with a fast pulse frequency when the walk phase is active. As a driver you should reduce speed, be prepared to stop, and give way to pedestrians who begin to cross the crosswalk.
Rules & Regulations
- The green acoustic signal with a fast pulse frequency means that pedestrians are allowed to walk at the signal-controlled crosswalk.
- The signal is intended primarily for visually impaired people and is linked to the walk phase of the traffic signal; the sound follows the same timing as the green walk light.
- Drivers and other road users must give way to pedestrians who are entering or intend to enter the crossing when the green acoustic signal sounds.
- If the signal changes while a pedestrian is already in the middle of the crosswalk, the pedestrian should complete the crossing quickly and safely; new pedestrians should not start crossing if the acoustic signal indicates 'wait'.
Tips for Drivers
- Listen for the fast pulse frequency as you approach a crosswalk — it means pedestrians may begin walking and you should be prepared to stop.
- Reduce speed and watch for unseen road users (e.g., visually impaired people) at crosswalks with acoustic signals, especially near schools, healthcare facilities, and public transport stops.
- Never block a crosswalk — even if you have a green light, an acoustic walk signal may cause pedestrians to start crossing in front of your vehicle.
- Show special consideration because many users rely on the sound; wait until people have passed before you drive on.
Common Mistakes
- Believing that the acoustic signal applies to the vehicles themselves instead of pedestrians — it signals the pedestrians' walk phase.
- Mixing up the fast pulse frequency (walk) with a slower or continuous tone (wait) and thus misjudging when pedestrians are allowed to go.
- Ignoring the sound signal because you don't see pedestrians and therefore continuing to drive — this is especially dangerous for visually impaired people.
Test Yourself
Road Sign: Green Acoustic Signal with Fast Pulse Frequency
What does this green audible signal with a fast pulse frequency mean for a pedestrian?
- A You may cross the street.
- B You must wait until the signal stops.
- C It is a signal that a train is approaching.
- D Vehicles may not drive through the intersection.
Exam Tip
On the theory test you may be asked what a fast pulse frequency means — the correct answer is that pedestrians are allowed to walk and that vehicles must give way. Also be prepared for a question that tests the difference between what the audible signal means for pedestrians versus what signs/lights mean for vehicles.
Did You Know?
Acoustic traffic signals were introduced to make crosswalks safer for visually impaired people; the fast pulse frequency is a clear, standardized audible signal used in many Swedish cities, often at schools, health centers, and transport hubs.
Frequently Asked Questions
Does the acoustic signal also apply to cyclists?
The signal's primary target group is pedestrians, especially the visually impaired. Cyclists should be extra cautious and give way to pedestrians who are crossing; it is often best to slow down or stop.
What does fast pulse frequency mean compared to other audible signals?
Fast pulse frequency means the walk phase is active and pedestrians may begin crossing. A slower or different tone normally means wait or that the walk phase is not active.
Must I stop immediately when I hear the green signal?
No, you do not have to stop if no pedestrian is nearby, but you must be prepared to stop and give way if someone begins to cross. Do not drive on if someone is already on the crosswalk.
Why are acoustic signals present at some crosswalks?
They exist to help visually impaired people and others who need audible indicators know when it is safe to cross. They are often placed where pedestrian traffic is high or where visual signals may be difficult to perceive.
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