(Al Hartmann | Tribune file photo) UHP Lt. Danny Allen looks for cars illegally using the HOV lanes along I-15 in Salt Lake Valley Oct. 6, 2016. This van going by only had one passenger and didn't trigger the transponder reader that indicates an express pass. It also had a CNG sticker that used to grant access to HOV lanes in the past but not necessarily now unless it's registered. Utah Department of Transportation and Utah Highway Patrol are partnering and launching an enforcement blitz to educate drivers how to correctly use the express lanes. Utah's Express Lanes are the longest continuous in the country stretching 72 miles from Layton to Spanish Fork.