Final answer:
A solid yellow line is a road marking used to indicate no passing zones on two-lane roads.
Step-by-step explanation:
A solid yellow line is a type of road marking that is used to indicate a zone where passing is prohibited on two-lane roads. It separates lanes of travel going in opposite directions. You are not allowed to cross this line unless you are making a turn and yielding to oncoming traffic.
Traffic safety refers to measures and practices implemented to prevent road accidents, injuries, and fatalities. It involves a combination of infrastructure design, regulatory measures, education, and enforcement to create a safe environment for all road users. Traffic safety is a critical aspect of transportation planning and public health, aiming to reduce the impact of road accidents on individuals and communities.