What do two solid, double yellow lines down the center of a street mean?

Two solid, double yellow lines down the center of a street indicate that passing is not allowed in either direction. This marking is designed to ensure safety by preventing vehicles from crossing over into oncoming traffic lanes, which can lead to dangerous situations, especially on roads where visibility may be limited or where higher speeds are prevalent.

In jurisdictions like the CNMI, these markings serve to enforce strict adherence to traffic rules, helping to reduce the likelihood of head-on collisions. It is essential for drivers to recognize this signal and maintain their lanes when these road markings are present to support the safety of all road users.