Aug. 7—Question: What is the purpose of the solid white lines separating traffic moving in the same direction? For example, the ones leading up to the Lowry Tunnel in Minneapolis. Does it make it ...

Question: What is the purpose of solid white lines, separating traffic moving in the same direction? Example the ones leading up to the Lowry tunnel in Minneapolis. Does it make it illegal to change ...

Before we expound, let’s let Mike explain himself. “When merging into another lane, sometimes I find myself crossing the white line on the freeway,” he wrote to us here at Traffic Q&A headquarters.

Q: Why hasn’t Caltrans used solid white lines to separate the express lanes from regular traffic on Highway 101 in San Mateo County? Alameda County uses double solid white lines to tell drivers they ...

Are you one of those drivers who weaves in and out of express lanes to general purpose lanes despite the solid double white lines and signs indicating you shouldn't? If so, you're not alone. Not even ...

Question: What is the purpose of the solid white lines separating traffic moving in the same direction? For example, the ones leading up to the Lowry Tunnel in Minneapolis. Does it make it illegal to ...