borderline of the lane that is determined by a visible lane marking; and in the absence of a visible lane marking, by incidental visible road features or other means such as GPS, magnetic nails, etc

NOTE 1 to entry: In the case of a visible lane marking, the boundary is at the center thereof.

distance from the point where a variable message sign becomes no longer readable to the place where the variable message sign is located

outermost limit of the warning threshold

area of roadway that a vehicle would be expected to travel along in the absence of any obstruction without the driver’s desire to change the path of travel

visible patterns on the road surface that were not explicitly intended to delineate the boundaries of the lane, but which are indicative of the position of the lane

NOTE 1 to entry: These can include such features as pavement seams or edges and curbs.

segment of road which curvature is less than 1/5 000 m

zone between the earliest and the latest warning lines within which the warning threshold is placed

NOTE There is one warning threshold placement zone around the left lane boundary and one around the right lane boundary.

location where the warning is issued on the road, which corresponds to a warning trigger point set in the system

NOTE 1 In the case of TTLC, the warning threshold shifts depending on the rate of departure.

NOTE 2 The warning threshold is placed within the warning threshold placement zone.

warning given to the driver in accordance with the lane departure warning condition in the absence of suppression requests

traffic condition where the driver, at lower speed, repeatedly starts, follows a forward vehicle, and stops in order to keep a proper following distance behind the forward vehicle

distance at which the illuminance of a non-diffusive beam of white light with a colour temperature of 2 700 K is decreased to 5 % of its original light source illuminance