In Utah (and possibly other states, too), getting on an Interstate highway sometimes poses an “extra” challenge. Driving on I-15 down through the Salt Lake City, Orem, and Provo area, as you approach an intersection, at some entrances, the traffic planners force you and ALL lanes in your direction to the left and ALL oncoming traffic to the right—sometimes just while driving under the bridge and sometimes just while driving over the bridge. It’s what we, in the USA, consider to be the “wrong side” of the road (like you were driving in England). So, when approaching the entrance to the Interstate, two or three lanes may be forced over to the left while the oncoming traffic is on our right. This is difficult to follow if you are not used to it, trying to follow a route, watching signs, watching signal lights, make a turn, stay in your correct lane, and just not screw up. Watch carefully and don’t try to rush it. This is not “normal” and goes against most all driving experience in the USA.
I have thought for years that the Interstate system design should have been consistent nationwide but as most of us know, states can change certain things (like in Utah as shown here).