Key:traffic_calming
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(Redirected from Tag:traffic calming=choker)
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 traffic_calming
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| Description |
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| Describes features used to slow down traffic. |
| Group: Highways |
| Used on these elements |
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| Documented values: 2 |
| Wikidata |
| Q1198538 |
Status: approved
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| Tools for this tag |
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- See
Traffic calming on Wikipedia
Traffic calming consists of engineering and other measures put in place on roads for slowing down or reducing motor-vehicle traffic as well as to improve safety for pedestrians and cyclists.
Contents
How to map
Add one of the following to either a segment of highway=* or to a node along the highway:
Common values
- Any device or feature causing traffic to calm or slow. Be more specific where possible.
By causing vertical deviation
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- A short bump, with extent, in the direction of travel, of about 30 cm or shorter. Spans the entire width of the road, with the intent of affecting both wheels on each of a vehicle's axle at once. However, it may have cut-outs and small gaps to the left and right for cyclists. (See speed bump.)
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- Similar to a bump, but longer in direction of travel, with total length of usually 2–4 m; i.e., it has a definite, level, upper surface. (See speed hump.)
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- Designed as a long speed hump with a flat section in the middle. The flat section is long enough for all wheels of a passenger car to fit on that section simultaneously. Does not slow as much as a hump and is usually used on roads with residential speed limit. It is known as flat top hump or raised pedestrian crossing. (See speed table.) Often it is a combination of traffic calming and crossing for pedestrians, so if it is there should be added highway=crossing in case it is mapped as a node.
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- With the features of a hump, but with greater gaps or cutouts to either side and at the median, allowing vehicles with a greater track width to pass unaffected, notably emergency vehicles and buses. (See speed cushion.)
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- Multiple consecutive short and low bumps (a few cm at most; smaller than bump would be) spanning the entire width of the road. The bumps would be spaced from a few times their own dimension to a few meters apart. The rumble strip causes noise and vibration intended to alert a vehicle driver something beyond the rumble strip, not to cause the driver to slow the vehicle to negotiate the feature itself.
- Do not confuse with longitudinally placed rumble strips to alert drivers that they are leaving their lane, which are generally not mapped by OSM. (See rumble strips.)
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- A dip is a traffic calming feature used to slow traffic and channelling water, that works for depression. Its dimensions are similar to bump.
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- A double dip is a traffic calming feature used to slow down mopeds and speed-pedelecs on bike-ways. Often made out of prefab concrete elements.
By causing lateral deviation
- traffic_calming=chicane (not to be confused with barrier=chicane)
- A deliberate sharp curve or series of curves street you have to drive round. The road may also be reduced in width to allow only one vehicle at a time. Called a driveway link in Australia. (See chicane.)
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- Narrowed road, sometimes signed as pinch points.
- See also priority=* to indicate which direction of traffic has priority at the choker (if any).
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- An island is a small area that temporarily separates two different directions of traffic. See also crossing=island for islands intended for pedestrians crossing the road.
See also
- highway=*
