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DMV Permit · Signaling and Communication

How far in advance should you generally signal before turning or changing lanes?

Reviewed by Jordan Morley, Editorial Lead at 247SimpleTests. Written by the 247SimpleTests Editorial Team from the official source material cited on every question.

Correct answer

Signal well in advance — typically at least about 100 feet before a turn in town, and earlier at higher speeds — to give others time to react

  1. A Only after you begin the maneuver
  2. B No signal is needed
  3. C Signal well in advance — typically at least about 100 feet before a turn in town, and earlier at higher speeds — to give others time to react
  4. D Signal exactly at the turn

Why this is the answer

You should signal your intention well before turning or changing lanes so other drivers, cyclists, and pedestrians have time to anticipate your move. A common guideline is to signal at least about 100 feet before a turn in lower-speed areas, and farther in advance at higher speeds or on the highway. Signaling early — and turning the signal off after completing the maneuver — communicates clearly and reduces the chance of a collision. Always check mirrors and blind spots before moving, since signaling does not give you the right of way; it only states your intention.
Source: Standard driver handbook, Signaling

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About this topic: Signaling and Communication

Signal 100 feet before the maneuver in town and longer on highways. Late signals warn no one in time; cancelled signals after the turn keep other drivers from being misled. This is one of 3 DMV Permit questions on signaling and communication, each with a full explanation on a single study page.

New to this exam? Our DMV Permit exam guide explains the format, scoring, and how to prepare.

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