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DMV Permit · Regulatory Signs

A round yellow or yellow-with-black sign with an 'X' in it means:

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Correct answer

Railroad crossing ahead (the round sign is the advance warning)

  1. A Stop sign ahead
  2. B Railroad crossing ahead (the round sign is the advance warning)
  3. C Construction ahead
  4. D School crossing

Why this is the answer

A round yellow sign with a black X and the letters 'RR' is the advance warning for a railroad crossing. It is placed before the actual crossing so drivers have time to slow and look for trains. The X-shaped crossbuck sign at the crossing itself is white with the words RAILROAD CROSSING in black. Federal law (and many state laws) require certain vehicles to stop at all railroad crossings even when no train is visible: school buses, vehicles carrying hazardous materials, and other commercial vehicles. All drivers should slow down and prepare to stop at any railroad crossing.
Source: MUTCD Section 2C Railroad Advance Warning

Practice more questions

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About this topic: Regulatory Signs

Black-on-white rectangular signs and special-shape signs (stop, yield, do-not-enter) all impose rules you must obey. Knowing the shapes lets you recognize them at a glance. This is one of 20 Road Signs questions on regulatory signs, 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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State-specific guides

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Recommended study materials

Study guide

DMV Permit Test Study Guide (Learner Editions)

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Road Rules & Signs Workbook (Exambusters)

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Prepare for the Learner's Permit Test (Sterling)

Practice questions and explanations for teen and adult first-time driver license test takers.

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