Final answer:
Stop lines are pavement markings indicating where vehicles must halt; the solid stop line is the standard type, while dashed stop lines are less common and specific to situations that require an alternate stopping position.
Step-by-step explanation:
In regard to pavement markings and specifically stop lines, there are commonly two types that are used to inform and direct drivers at intersections, pedestrian crossings, and other traffic control points. The most frequently encountered type is the solid stop line, which is a wide white line painted across the traffic lane to indicate where vehicles must stop at a STOP sign or traffic signal. The second, less common type is the dashed stop line, which may be used in certain situations such as at signalized intersections where the line of sight to the signal is not sufficient from the solid stop line, allowing vehicles to stop at a point closer to the traffic signal. It's important to note that double solid stop lines and double dashed stop lines are not standard and typically not used for controlling traffic at stop locations.