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LaneType.md

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LaneType Enumerated Type

A description of the static properties of a section of the roadway, intended to reflect information about its function that is not covered by its status (see LaneStatus).

Values

Value Description
general A generic lane type, intended to be used for general purpose travel lanes.
exit-lane A lane leading towards an egress from the current roadway. An exit-lane usually becomes an exit-ramp after a gore point.
exit-ramp A lane at an interchange leading away from the current roadway to another roadway.
entrance-lane A lane leading away from an ingress to the current roadway. An entrance-ramp usually becomes an entrance-lane after a gore point.
entrance-ramp A lane at an interchange for traffic to ingress from another roadway to the mainline.
sidewalk A path for pedestrians, usually on the side of the roadway.
bike-lane A lane on the roadway for use by cyclists only.
shoulder A portion of the roadway that is outside (either right or left) of the main travel lanes. A shoulder can have many uses but is not intended for general traffic.
parking A lane used for parking, not allowed for travel.
median An often unpaved, non-drivable area that separates sections of the roadway. In most cases a median should only be described if it separates lanes in a single direction of travel, as per business rule #1 each direction of travel must be represented by a separate road event.
two-way-center-turn-lane A lane in the center of a bidirectional roadway that traffic from both directions uses to make a turn that crosses opposite direction of traffic (i.e. left in right-side driving countries, and right in left-side driving countries).
center-left-turn-lane (DEPRECATED) A lane in the center of a bidirectional roadway that traffic from both directions uses to make a left turn. This property is deprecated and will be removed in a future release, use two-way-center-turn-lane instead.

Used By

Property Object
type Lane

Additional Information

The LaneType enumerated type was originally based on the TMDD LaneRoadway Enumeration, which is imported into TMDD from SAE 2540 (ITIS Standard).

In later release, other standards were examined for inspiration. These include SAE J2735 and the ISO 20524-1 Geographic Data Files (GDF) standard.