Final answer:
Solid center lines on a road signify that no passing is allowed, guiding drivers to follow traffic rules in areas where overtaking would be unsafe.
Step-by-step explanation:
Solid center lines on a roadway indicate that no passing is allowed. These lines are meant to guide drivers and maintain traffic safety by preventing overtaking in areas where sight distance is limited, where the road is curvy or where other conditions make passing unsafe.
These solid lines are typically painted on the road surface and signal to drivers that they must stay in their lane and cannot use the opposite lane to pass other vehicles. Ignoring these solid center lines can result in a traffic violation and pose significant safety risks to both the driver and others on the road.
In summary, solid center lines serve as a clear indicator to drivers that the area is not safe for passing, and it is the driver's responsibility to obey these traffic rules to ensure road safety for everyone.