The suspended HOV zones are a suspension of the HOV lane requirement to have a passenger, CV, or express pass.
Crossing the double white lines is not an HOV violation - it is a separate statute, failure to obey traffic control device. That statute is not exempted and is still required to be followed. UHP will still enforce these violations in suspended zones.
“With a need for capacity during construction, the restrictions have been lifted on the aforementioned section of I-15 — but crossing the Express Lanes' double white lines is still illegal while the restrictions have been suspended, said UDOT Travelers Information Manager Lisa Miller.”
"We've been seeing it on the road and we've been getting questions about it on social media," Miller said. "But crossing over that double white line is still illegal and it's dangerous. So we're really stressing that drivers enter and exit the (Express) lanes at the designated (dotted white line) points."