Crane hand signals for the NCCCO written exams

Signals matter in two places. On the Core written, they sit in Operations, which is about 28% of the exam. On the Signalperson written, hand signals are the largest domain at about 31%, with voice communication another 17%. This page works for both.

Learn the families, not 19 separate pictures

OSHA's crane rule includes a standard set of 19 hand signals in an appendix to Subpart CC, which the rule points to from section 1926.1419. Do not memorize the set as one flat list. Sort it by what the signal asks the crane to do:

• Stop signals. Stop and emergency stop. These are the ones to know cold.
• Hoist signals. Raise or lower the load, or the hook, and the variations that ask for slow movement.
• Boom signals. Raise or lower the boom, extend or retract it, and combinations with the load line.
• Swing and travel signals. Swing the boom, travel, and stop travel.
• Everything else. The few signals that fit no family, such as the ones for holding or securing. Learn them last, from the appendix.

Each family has a pattern. Within a family the gestures share a logic, so a signal you half remember can often be rebuilt from its neighbors.

Use the original drawings in the crane hand signals drill. It scores you on naming each of the 19 in random order. Open the OSHA appendix in your own copy once and compare, since the exam tests the standard signals, not our pictures.

The rules around the signals

Many written questions ask about the rules for signaling, not the signals themselves. Know these ideas, which come from OSHA 1926.1419 to 1926.1422 and the Signalperson handbook outline:

• One person signals at a time. The operator follows a single designated signal person, with one exception: anyone can give a stop signal, and the operator obeys it.
• The signal person must be visible. If the operator cannot see you, the signals do not count. Position matters as much as the gesture.
• Use the standard signals. Non-standard signals are allowed only when the standard ones cannot do the job, and everyone involved must agree on them before the lift starts.
• The operator may refuse. If the operator does not understand a signal or doubts it is safe, they stop and the two sort it out.

When a question describes confusion, the safe answer is almost always the same: stop the load, restore clear communication, then resume.

Voice and radio signals

Voice communication is tested separately on the Signalperson written and appears in Operations questions on Core. The handbook outline describes a voice signal as three parts: function and direction, distance or speed, and a stop. Think of how a command sounds: what to do and which way, how far, then a clear stop. Radios add their own checks, such as batteries, interference and wind, and language problems on site.

Audible signals from the crane, like a horn, have a short meaning set. Learn what the horn means in your handbook references and keep those separate from hand signals.

A one-week drill

Ten minutes a day is enough.

1. Day 1. Learn the two stop signals and the rule that anyone can give one, then the hoist family.
2. Day 2. Boom family. Run the drill and write down the three you miss.
3. Day 3. Swing and travel signals.
4. Day 4. The full set in random order. Say each name aloud before the answer appears.
5. Day 5. Only your misses from days 2 to 4, until you get them right twice in a row.
6. Day 6. The rules above, written from memory as five one-line statements.
7. Day 7. Take the free 10-question check and see whether any Operations misses were about signaling.

Candidates tend to confuse signals that differ by which hand moves, or by whether a motion repeats. When you miss one, say out loud how it differs from the one you chose, then retest it the next day.

Where this sits in the bigger plan

If you are sitting the Core, signals are one task among 22 in Operations, so give them days, not weeks. The Core study guide shows how to split time across all four domains. If you are sitting the Signalperson written, they are your biggest domain, and our Signalperson and Rigger exams guide shows the outline. We do not have a Signalperson question bank, only the drill above and a Core check that covers the shared crane knowledge.

For a full Core question bank with explained answers and timed sets, see the plans. Hook, the study buddy, can turn your weakest Operations tasks into a short daily list.

Sources

• 29 CFR 1926 Subpart CC: Cranes and Derricks in Construction, OSHA: sections 1926.1419 to 1926.1422 and the signal appendix, cited by number and topic only.
• Domain weights and outline: the Mobile Crane Operator and Signalperson candidate handbooks from CCO, as recorded in our Core study guide and Signalperson and Rigger guide (checked 20 and 24 Oct 2026).

FAQ

How many standard crane hand signals are there?

OSHA's Subpart CC appendix lists 19 standard hand signals for mobile cranes. Tower cranes have their own set, which the Signalperson outline also covers.

Can anyone give a stop signal?

Yes. Only the designated signal person directs the lift, but the operator obeys a stop signal from anyone.

Are hand signals on the Core written exam?

Signals are part of the Operations domain in the Core outline. Expect a few questions on signals and the rules around them, not a full picture quiz.

What if the operator cannot see the signal person?

Then communication is not established. Stop the load and fix visibility or switch to another allowed method, such as radio, before continuing.

Do I need a separate course for the Signalperson written?

It has its own outline and its own handbook. A Core check is a decent test of the shared crane knowledge, but read the Signalperson handbook outline before you plan.