Lighting DEFINITION AND DESCRIPTION Lighting can be installed continuously along segments of roadway, at intersections, and at spot locations to improve visibility of the roadway, other vehicles, and pedestrian crossings. Limited visibility contributes to nighttime...
Leading Pedestrian Interval (LPI) DEFINITION AND DESCRIPTION A leading pedestrian interval (LPI) provides an advance WALKING PERSON (symbolizing WALK) indication to be displayed for the crosswalk while red indications continue to be displayed to parallel through...
Increase Use of Roadside Barriers and End Terminals DEFINITION AND DESCRIPTION When it is not feasible to remove or relocate a roadside obstacle, it may be shielded by a longitudinal traffic barrier or crash cushion. A roadside barrier redirects or contains errant...
Supplemental In-Lane Pavement Markings Image Source: Julian, F. Horizontal Signing, A Proven Low-Cost Horizontal Curve Safety Countermeasure.2024 TRB International Roadside Safety Conference presentation. DEFINITION AND DESCRIPTION Regulatory, warning, or guidance...
Successively Smaller Curves Image Source: Google Earth DEFINITION AND DESCRIPTION A series of progressively sharper curves creates a self-enforcing roadway that encourages motorists to reduce speeds. These commonly take the form of reverse curves separated by a...
