Final answer:
Solid white lines between lanes of traffic moving in the same direction indicate lane dividers or boundaries. Drivers are expected to stay within their lane and not cross over these lines.
Step-by-step explanation:
Solid white lines between lanes of traffic moving in the same direction indicate lane dividers or boundaries.
These lines are used to separate different lanes of traffic and help maintain order on the road.
Drivers are expected to stay within their lane and not cross over these solid white lines.