Which of the following elements does NOT comprise road alignment delineation?

Road alignment delineation refers to the techniques and elements used to define and guide drivers along a roadway. This includes various physical features that help in marking the path of the road and providing necessary information for safe navigation.

Traffic signals are primarily used to control vehicular and pedestrian movement at intersections and do not directly serve the purpose of delineating the road alignment itself. They indicate when vehicles should stop or go and are important for traffic management but do not contribute to visually guiding the vehicle along the road.

On the other hand, pavement markings are painted lines on the road surface that direct traffic and indicate lane divisions, allowing drivers to navigate safely. Reflective delineators are physical markers that enhance visibility, especially at night or in poor weather conditions, contributing directly to the delineation of the road. Additionally, signs are placed along roadways to provide essential information about the road layout, directions, and warnings, thus playing a vital role in guiding drivers along their route.

Thus, the correct choice is that traffic signals do not comprise road alignment delineation as their function differs significantly from that of the other elements involved in marking and defining roadways.