if you see double solid lines on two-lane roadways you should know that:?

Pavement Markings

Double solid yellow lines prohibit vehicles moving in either direction from crossing the lines. You may not cross these lines unless turning left when it is safe to do so. White lane lines separate lanes of traffic moving in the same direction. Single white lines may also mark the right edge of the pavement.

DMV Test Preparations – Road Markings & Lines