Interpretation of Rush Hour Lanes
For describing rush hour lanes, a more detailed explanation is provided for status transitions, a specific application of location referencing, and a further explanation about sub-segments.
Rush Hour Lane Status
The standard sequence of statuses is generally described in Interpretation of Road Authority Actions. This section explains specific interpretations related to bridge openings.
For rush hour lane openings, the following definitions apply per status:
- Normal or Rest Status (until b): The event moment is known and is announced in advance.
- Transition from Rest to Active Status (from b to c): The opening has been initiated (e.g., surveying and opening by sub-segment).
- Active Status (from c to d): From this moment on, the rush hour lane (or sub-segment) is available for road traffic.
- Transition from Active to Rest Status (from d to e): From this point on, the sub-segment is cleared of traffic.
- Normal or Rest Status (after e): From this moment on, the rush hour lane is closed to road traffic.
!!! Note "Rush Hour Lane Information with Sub-segments" As indicated below, a rush hour lane may consist of sub-segments, and information will always be provided about the sub-segments (not the entire rush hour lane).
!!! Note "Availability of Status" Not all statuses will be available for every rush hour lane.
!!! Note "Announcement Availability" If a rush hour lane is closed (Normal or Rest Status) and no announcement is made about it opening, no status will be given.
Location Reference
The location referencing method used should be alertCLinear of the type AlertCMethod4Linear The location refers to the section of the road on which the event is occurring.
The rush hour lane opening always affects one direction of traffic.
As additional location reference, the exact lane in which the event applies is indicated. The element used for this is lane from the supplementaryPositionalDescription. Allowed values include: hardShoulder, rushHourLane, tidalFlowLane.
Sub-segments
When a rush hour lane covers a longer stretch of road, it is possible for the rush hour lane to be divided into two or more sub-segments. In practice, it may also occur that only part of the rush hour lane is opened, and in this case, messaging will be possible for that segment.
Another situation where multiple sub-segments may occur is when the start and end do not lie on the same road.
If a rush hour lane consists of more sub-segments, the status for each sub-segment will be recorded as separate situationRecords under one situation.