Question

a _____ yellow line means traffic on both sides may not cross the center line to pass.
single broken
double broken
single solid
double solid

Explanation:

To solve this, we recall traffic line rules: A double solid yellow line prohibits traffic from both sides from crossing the center line to pass. Single broken or single solid lines have different rules (e.g., single broken allows passing in some cases, single solid may restrict one side), and double broken isn't a standard traffic line for this restriction.

Answer:

D. double solid