Turn signals and railroad crossings

Key points

1. You must signal every time, even when no other vehicles are in sight.

   Source: Handbook p. 27

   “You must signal every time, even when there are no other vehicles in sight.”
   Hawaii Driver's Manual, Handbook p. 27

2. Signal for at least 100 feet, about 5 car lengths, before you change lanes, turn or stop.

   Source: Handbook p. 27

   “Signals must be given for at least 100 feet (30.5m) before you change lanes, turn or stop. This is about five car lengths.”
   Hawaii Driver's Manual, Handbook p. 27

3. Use hand signals when your turn signals are not working.

   Source: Handbook p. 27

   “Hand signals must be used when the vehicle turn signals are not operating.”
   Hawaii Driver's Manual, Handbook p. 27

4. A signal does not give you the right to make the move; make sure it is safe first.

   Source: Handbook p. 27

   “Signaling does not give you the right to make the indicted maneuver;”
   Hawaii Driver's Manual, Handbook p. 27

5. Do not rest your foot on the brake pedal, because it gives a false stop signal.

   Source: Handbook p. 27

   “Do not rest your foot on the brake pedal when you are not braking to avoid giving following drivers a false stop lamp signal.”
   Hawaii Driver's Manual, Handbook p. 27

6. Stop at least 15 feet from the nearest rail when a signal warns of a train, a gate is down or a flagman signals.

   Source: Handbook p. 27

   “You must stop your vehicle not less than 15 feet (4.6m) from the nearest rail when: An installed electric or mechanical signal is giving warning of an approaching train; A crossing gate is lowered, or a flagman is signaling the approach of a train;”
   Hawaii Driver's Manual, Handbook p. 27

7. Also stop when a train within 1,500 feet sounds a warning.

   Source: Handbook p. 27

   “A train approaching within 1,500 feet (460m) gives audible warning of its approach;”
   Hawaii Driver's Manual, Handbook p. 27

8. Hazard warning signals should never be used while the vehicle is moving.

   Source: Handbook p. 73

   “THIS SIGNAL SHOULD NEVER BE USED WHEN THE VEHICLE IS MOVING.”
   Hawaii Driver's Manual, Handbook p. 73

Numbers to know

Recognize these signs

3 questions from the Hawaii practice test

1. 1. How far before a turn or lane change must a driver generally signal?

   1. Only after beginning the maneuver
   2. At least 10 feet
   3. At least 100 feet
   4. Only when another vehicle is nearby
   Show answer

   At least 100 feet. Hawaii requires a turn signal for at least 100 feet before every turn or lane change. Signaling after the maneuver begins gives other road users too little time to understand the plan, and waiting for another vehicle is not the rule. The signal communicates intent but does not grant the right to move, so the driver must still check and yield as needed. Activate it early, maintain it through the maneuver, and confirm the path is clear before changing direction.

2. 2. When is a driver prohibited from using the left half of the roadway?

   1. When approaching the top of a hill or traveling on a curve
   2. Whenever the road has a single lane in each direction
   3. Only when following a slow vehicle
   4. Whenever the weather is clear
   Show answer

   When approaching the top of a hill or traveling on a curve. A hill crest or curve can hide opposing traffic, so the manual prohibits driving on the left half when approaching the top of a hill or while on a curve. The rule is not triggered by every two lane road, by following a slow vehicle, or by clear weather. Visibility and the risk of an unseen vehicle control the restriction. Keep to the right through the blind portion and wait for a lawful passing opportunity with enough sight distance.

3. 3. What does a turn signal communicate to other highway users?

   1. The driver's intention, but not a right to make the movement
   2. An automatic right-of-way over all nearby traffic
   3. That other drivers must stop immediately
   4. That the maneuver is safe without a check
   Show answer

   The driver's intention, but not a right to make the movement. A turn signal communicates an intended movement, but it does not give the driver the right to make that movement. The driver remains responsible for checking traffic and completing the turn or lane change safely without interfering with others. The automatic priority choice turns a warning into a privilege that Hawaii's rule does not grant. Other drivers are not required to stop immediately, and a signal never replaces a safety check. Signal in advance, observe the surrounding traffic, and proceed only after the space and path are clear.

Source: the Hawaii Driver's Manual, Chapter V: Traffic Laws and Regulations. 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.