Final answer:
A continuous, double, solid, yellow line on a two-lane, two-way road indicates that passing is not allowed for traffic from either direction, and drivers should stay in their lane.
Step-by-step explanation:
On a two-lane, two-way road, a continuous, double, solid, yellow line as the center line generally means that traffic is not allowed to cross the line to pass. These lines are used to indicate that it is unsafe to pass due to limited visibility of oncoming traffic or other hazards. When you see such markings, you must stay in your lane and should not attempt to pass other vehicles.
Overtaking or passing is strictly prohibited in both directions. This traffic control measure is vital for maintaining safety on roads where passing could lead to collisions, especially in areas with curves, hills, or other obstructions that limit a driver's view of the opposite lane.