NCCCO Core practice exam: a full 95-question test in 90 minutes
The CCO Mobile Crane Operator Core exam is 95 multiple-choice questions in 90 minutes, and no calculator is allowed. Our practice exam has the same shape.
- The reason behind every answer
- OSHA 1926 Subpart CC checked
- Score by domain
- Checked 23 October 2026
CCO’s candidate handbook does not state a pass mark for the written exams.
- 95 original Core questions, one full exam
- All four domains, in about the handbook's shares
- OSHA Subpart CC answers explained
- Your score by domain
The practice exam
Double-checked questions Real exam pattern Free sample · 3 questions
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Full tests 1 test
One payment unlocks the full test
- 95 original Core questions, one full exam
- All four domains, in about the handbook's shares
- OSHA Subpart CC answers explained
- Your score by domain
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Every test: instant score, answer review and a breakdown of topics to work on
NCCCO Core Practice Exam 1
Included in the full set
What it covers
The CCO Mobile Crane Operator Core exam is 95 multiple-choice questions in 90 minutes, and no calculator is allowed. Our practice exam has the same shape: 95 original questions across the four Core domains in about the shares the handbook gives, against a 90-minute clock in the full test player, then your score by domain and the reason behind every answer. Start with the 3 free questions.
- Site: about 22% of the exam
- Operations: about 28% of the exam
- Technical Knowledge: about 23% of the exam
- Load Charts: about 27% of the exam
Regulatory answers are checked against OSHA 29 CFR 1926 Subpart CC (cranes and derricks in construction), which the CCO reference list names. Load chart questions use a fictional practice crane's chart, shown with each question.
The CCO exams this prepares you for
To be certified as a Mobile Crane Operator, CCO asks you to pass the Core written exam, at least one specialty written exam (Lattice Boom LAT, Telescopic Boom Swing Cab TLL or Telescopic Boom Fixed Cab TSS) and the matching practical exam, within 12 months of passing the first. Read CCO's own Mobile Crane Operator Candidate Handbook for the exam outlines; for how the load chart questions work, see our guide to crane load chart practice.
Before you buy
What do I get?
One full practice exam of 95 questions in the full test player with a 90-minute clock. When you submit, you see your score by topic and the reason behind every answer. Retake it as often as you like.
How were the answers checked?
Regulatory answers are tied to the text of OSHA 29 CFR 1926 Subpart CC. Every question was then answered by three independent reviewers who did not see our answer key, and went in only when all three matched ours with no objection raised.
Is this the current format?
It follows the CCO Mobile Crane Operator Candidate Handbook (revision 01/25): the Core exam has 95 questions in 90 minutes without a calculator; each specialty exam has 28 questions in 60 minutes with a calculator. Format last checked 23 October 2026; check CCO's current handbook before your test day.
How do I pay and get access?
One payment by card (or PayPal where offered), handled by our payment provider. In the United States the price is charged in US dollars; in other countries in your own currency where we support it, otherwise in Indian rupees with the local figure shown as an estimate. Access opens on this device straight after payment. Sign in afterwards to keep it on your account. Purchase policy.
Also for the NCCCO written exams
- Load chart drill60 problems in 3 timed rounds
- Both togetherCore practice exam + load chart drill
Independent practice material. Not written or endorsed by the NCCCO (CCO). These are original questions on fictional practice charts, not CCO exam questions or real crane charts. The format is stated as CCO's handbook gave it on 23 October 2026; CCO's current handbook is the authority.
Disclaimer
Are these real CCO exam questions or real load charts? No. Every question is original, and the load charts are fictional, made for practice: they are not any manufacturer's chart and not the chart CCO uses. What you practise carries over: reading a chart, applying its notes and taking off every deduction. On any real chart, follow its own notes.
Is it official? No. This is independent practice by ProSyllabus, not produced, endorsed or checked by the National Commission for the Certification of Crane Operators (NCCCO/CCO).