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physical traffic separator¶
mechanism used to physically separate a travelled way or pathway from the adjacent environment
Clause: 3.3.2.1
Note 1 to entry: Mechanisms include various types of barriers, such as walls, rails, pylons, kerbs and ditches, as well as open, unpaved space. If two streams of traffic are only separated by paved space (including any markings and rumble strips), they share a common carriageway.
Note 2 to entry: The adjacent environment can be an opposing direction of travel, a different mode of travel, the edge of a bridge, etc.
History note: 2025: Replaced "separate carriageways" with "separate a travelled way or pathway from the adjacent environment" to clarify that physical traffic separators are not limited to separating carriageways. Added note 2 to entry.
History note: Introduced in ISO/TS 14812:2022
Specializations of physical traffic separator¶
| Class | Description |
|---|---|
| central reservation | part of the road reservation between carriageways designed for travel safety purposes |
| Jersey barrier | physical traffic separator that consists of a wall with a wide, sloped base designed to divert vehicles back into their traffic lane |
| kerb | physical traffic separator, usually upstanding, at the edge of a carriageway, hard strip, hard shoulder, or footway Note 1 to entry: "Curb" is the US spelling. |
References to physical traffic separator¶
| Referencing Term | Type of Reference |
|---|---|
| dual carriageway | has |
| multiple carriageway | has |