Are side mounted vertical license plates legal in Utah?

Yes, side-mounted vertical license plates are legal in Utah. The state allows for two options for license plate display: one license plate on the rear of the vehicle and one on the front, or one license plate on the rear of the vehicle with the registration sticker placed on the front windshield. In either case, the license plate or sticker must be clearly visible from the front and rear of the vehicle, which side-mounted vertical license plates can accommodate.