: These are painted at intersections to prevent "gridlock." Drivers must not enter the box unless their exit is clear, even if the traffic light is green. Material Specifications (Standard 1.46 Context)
: Yellow markings must conform to standard highway color specifications (often defined by CIE chromaticity coordinates) to ensure they remain distinguishable from white markings under all lighting conditions. Specialized Yellow Markings STANDARD SPECIFICATIONS - Caltrans YELLOW ROAD MARKINGS 1.46
: These signify that passing is permitted in either direction, provided it is safe to do so. In some jurisdictions, a specific 3:1 segment-to-space ratio is used for these markings. : These are painted at intersections to prevent "gridlock
: These indicate two-way traffic where no passing or overtaking is permitted. Drivers must always keep to the right of these lines. In some jurisdictions, a specific 3:1 segment-to-space ratio
: All yellow pavement markings must be reflectorized using glass beads . These beads are either pre-mixed into the paint or dropped onto the surface during application to ensure nighttime visibility through retroreflection.