Drivers often ask about crossing or turning over double yellow lines. It is lawful to turn across a double yellow line in order to turn into or out of public or private property. Double yellow lines are generally used to divide a roadway when there is two-way traffic. Passing is not allowed over a double yellow line at any time. Take a look at the DMV website for additional information on roadway markings. Remember that two double yellow sets of lines in a roadway constitute a divided roadway and are a painted median. It is unlawful to turn across such a marking.