Lane Changes, Passing, Turns and U-Turns

Key points

1. Signal for at least 2 seconds in the direction you intend to move.

   Source: Handbook p. 30

   “Signal for at least two seconds in the direction you intend to move.”
   Utah Driver Handbook, Handbook p. 30

2. On multi lane roads, stay in the far right lane unless passing or the lane is blocked.

   Source: Handbook p. 31

   “On multi-lane roads, always move to or remain in the far-right lane unless you are passing another vehicle or the lane is blocked.”
   Utah Driver Handbook, Handbook p. 31

3. When merging, yield to vehicles in the continuing lane close enough to be a threat.

   Source: Handbook p. 31

   “you must yield the right-of-way to all vehicles traveling the continuing traffic lane that are close enough to be an immediate threat.”
   Utah Driver Handbook, Handbook p. 31

4. At a congested merge, use both lanes to the merge point, then alternate like a zipper.

   Source: Handbook p. 31

   “Use both lanes of traffic until the vehicles reach the merge point, and once the vehicles reach the merge point, alternate”
   Utah Driver Handbook, Handbook p. 31

5. After passing, return to the right lane no less than 200 feet from oncoming vehicles.

   Source: Handbook p. 34

   “Return to the right-hand lane no less than 200 feet from oncoming vehicles.”
   Utah Driver Handbook, Handbook p. 34

6. When passing on the right, leaving the roadway is illegal.

   Source: Handbook p. 34

   “When passing on the right, it is illegal to leave the roadway.”
   Utah Driver Handbook, Handbook p. 34

7. When 3 or more snowplows work in echelon formation, you may not pass them on either side.

   Source: Handbook p. 34

   “If three or more snowplows operate in echelon formation, an individual operating a vehicle may not pass or overtake the snowplows on either side.”
   Utah Driver Handbook, Handbook p. 34

8. Never U-turn on a curve or near a hilltop where you cannot see or be seen for 500 feet in both directions.

   Source: Handbook p. 38

   “Never make a U-turn on any curve near the top of a hill where you cannot see or be seen from both directions for 500 feet”
   Utah Driver Handbook, Handbook p. 38

Numbers to know

Recognize these signs

3 questions from the Utah practice test

1. 1. How long must you signal before moving into another lane in Utah?

   1. At least two seconds before the move
   2. For one quick flash as the tires cross the line
   3. At least five seconds after entering the lane
   4. Only while turning your head to check the blind spot
   Show answer

   At least two seconds before the move. Give the lane-change signal at least two seconds before moving toward the adjacent lane. A single flash at the lane line leaves nearby drivers without the advance notice Utah calls for. After checking mirrors, use the signal and look over your shoulder toward the intended movement to check the blind spot. The lane stripe is a useful cue: the warning interval should happen before you begin moving across it.

2. 2. A snowplow ahead is displaying flashing yellow lights with a plow blade deployed on one side. Where may you not pass it?

   1. On the side where the plow blade is deployed
   2. On the side without a blade, if the road ahead is clear
   3. Only on the left side, whatever the blade position
   4. Nowhere, as long as you sound your horn first
   Show answer

   On the side where the plow blade is deployed. Utah law protects drivers and snowplow operators. When a snowplow displays flashing yellow lights, you may not pass or overtake it on the side where its plow blade is deployed. If three or more snowplows are working together in echelon formation, you may not pass them on either side. Pass only where the law allows it and it is safe to do so. Sounding the horn does not create an exception to these rules.

3. 3. At a congested Utah merge point such as a construction zone, how does the handbook say drivers should merge?

   1. Merge as early as possible into the open lane
   2. Use both lanes to the merge point, then alternate into the single lane
   3. The lane that ends must stop and wait for a gap
   4. Faster vehicles go first
   Show answer

   Use both lanes to the merge point, then alternate into the single lane. Utah describes zipper merging for congested merge points like construction zones. Use both lanes of traffic until the vehicles reach the merge point, and once they reach it, alternate, yielding the right-of-way into the single traffic lane. Merging as early as possible is not the method the handbook describes, and no lane has to stop and wait. The handbook adds that a violation of this section is an infraction, so taking turns at the merge point is the law as well as the courteous choice.

Source: the Utah Driver Handbook, Section 8: Basic Driving. This lesson is a plain English summary, not the law itself; where it differs, the manual and the statute govern. Last checked 2026-09-27.