EICA MOBILE CRANE & DIGGER DERRICK
Study Guide Comprehensive Resource To Help You Ace
2026-2027 Exams Includes Frequently Tested Questions
With ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. What are common uses for a digger derrick?
A. Excavating foundations only
B. Dig poles, hang transformers, set poles, and install anchor rods
C. Transporting materials only
D. Lifting personnel only
Correct Answer: B. Dig poles, hang transformers, set poles, and install anchor
rods
2. What is a qualified person?
A. Any trained worker
B. A person with experience only
C. A degree holder or experienced person capable of solving problems related to
the work
D. A supervisor only
Correct Answer: C. A degree holder or experienced person capable of solving
problems related to the work
3. What is a competent person?
A. A licensed operator
B. A person able to identify hazards and authorized to take corrective measures
C. A trained signalperson
D. A safety observer only
Correct Answer: B. A person able to identify hazards and authorized to take
corrective measures
,4. OSHA 1926.959 addresses:
A. Traffic control
B. Excavation safety
C. Critical lifting components and visual inspection before each shift
D. Rigging procedures only
Correct Answer: C. Critical lifting components and visual inspection before
each shift
5. During a walk-around inspection, which areas are of concern?
A. Tires only
B. Cab controls
C. Winch line, hydraulic hose fittings, auger sling, and grabber hose fittings
D. Fuel tank only
Correct Answer: C. Winch line, hydraulic hose fittings, auger sling, and grabber
hose fittings
6. During walk-around inspection, what should be checked regarding dielectric
certification?
A. Color of sticker
B. Manufacturer name
C. Certification is not expired (valid for 2 years)
D. Serial number only
Correct Answer: C. Certification is not expired (valid for 2 years)
7. How many days in advance should you call before digging, and what number is
used?
A. Same day — 911
B. 1 day — 511
C. 2–3 days — 811
D. 5 days — 411
Correct Answer: C. 2–3 days — 811
8. What information is required before calling 811?
A. Equipment type only
,B. Contact information, dig location, and type of work
C. Crew size
D. Permit number only
Correct Answer: B. Contact information, dig location, and type of work
9. Who marks underground utilities in the dig area?
A. Contractor
B. Supervisor
C. Utility company
D. Equipment operator
Correct Answer: C. Utility company
10. Minimum distance to stay away from underground utilities when digging:
A. 6 inches
B. 1 ft
C. 2 ft
D. 3 ft
Correct Answer: C. 2 ft
11. What can be used in a tolerance zone?
A. Power auger
B. Backhoe
C. Hand tools or vacuum excavation
D. Digger derrick
Correct Answer: C. Hand tools or vacuum excavation
12. What is NOT allowed in the tolerance zone?
A. Hand digging
B. Vacuum excavation
C. Power tools and digger derrick
D. Shovels
Correct Answer: C. Power tools and digger derrick
13. The tolerance zone extends how far on each side of a conduit?
A. 12 inches
, B. 18 inches
C. 24 inches
D. 36 inches
Correct Answer: C. 24 inches
14. Using the correct tools for hand digging is called:
A. Controlled excavation
B. Safe digging
C. Prudent excavation techniques
D. Manual excavation practice
Correct Answer: C. Prudent excavation techniques
15. What worksite protection can be used in TTC areas?
A. Barricades only
B. Flags, cones, and signs
C. Tape only
D. Lights only
Correct Answer: B. Flags, cones, and signs
16. Which publication provides guidance for temporary traffic control?
A. OSHA 1926
B. ANSI B30.5
C. Manual on Uniform Traffic Control Devices (MUTCD) Chapter 6
D. NFPA 70E
Correct Answer: C. Manual on Uniform Traffic Control Devices (MUTCD)
Chapter 6
17. Which is one of the seven fundamental principles of TTC?
A. Increase traffic speed
B. Protect people passing through the work zone
C. Eliminate signage
D. Use minimal barriers
Correct Answer: B. Protect people passing through the work zone
Study Guide Comprehensive Resource To Help You Ace
2026-2027 Exams Includes Frequently Tested Questions
With ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. What are common uses for a digger derrick?
A. Excavating foundations only
B. Dig poles, hang transformers, set poles, and install anchor rods
C. Transporting materials only
D. Lifting personnel only
Correct Answer: B. Dig poles, hang transformers, set poles, and install anchor
rods
2. What is a qualified person?
A. Any trained worker
B. A person with experience only
C. A degree holder or experienced person capable of solving problems related to
the work
D. A supervisor only
Correct Answer: C. A degree holder or experienced person capable of solving
problems related to the work
3. What is a competent person?
A. A licensed operator
B. A person able to identify hazards and authorized to take corrective measures
C. A trained signalperson
D. A safety observer only
Correct Answer: B. A person able to identify hazards and authorized to take
corrective measures
,4. OSHA 1926.959 addresses:
A. Traffic control
B. Excavation safety
C. Critical lifting components and visual inspection before each shift
D. Rigging procedures only
Correct Answer: C. Critical lifting components and visual inspection before
each shift
5. During a walk-around inspection, which areas are of concern?
A. Tires only
B. Cab controls
C. Winch line, hydraulic hose fittings, auger sling, and grabber hose fittings
D. Fuel tank only
Correct Answer: C. Winch line, hydraulic hose fittings, auger sling, and grabber
hose fittings
6. During walk-around inspection, what should be checked regarding dielectric
certification?
A. Color of sticker
B. Manufacturer name
C. Certification is not expired (valid for 2 years)
D. Serial number only
Correct Answer: C. Certification is not expired (valid for 2 years)
7. How many days in advance should you call before digging, and what number is
used?
A. Same day — 911
B. 1 day — 511
C. 2–3 days — 811
D. 5 days — 411
Correct Answer: C. 2–3 days — 811
8. What information is required before calling 811?
A. Equipment type only
,B. Contact information, dig location, and type of work
C. Crew size
D. Permit number only
Correct Answer: B. Contact information, dig location, and type of work
9. Who marks underground utilities in the dig area?
A. Contractor
B. Supervisor
C. Utility company
D. Equipment operator
Correct Answer: C. Utility company
10. Minimum distance to stay away from underground utilities when digging:
A. 6 inches
B. 1 ft
C. 2 ft
D. 3 ft
Correct Answer: C. 2 ft
11. What can be used in a tolerance zone?
A. Power auger
B. Backhoe
C. Hand tools or vacuum excavation
D. Digger derrick
Correct Answer: C. Hand tools or vacuum excavation
12. What is NOT allowed in the tolerance zone?
A. Hand digging
B. Vacuum excavation
C. Power tools and digger derrick
D. Shovels
Correct Answer: C. Power tools and digger derrick
13. The tolerance zone extends how far on each side of a conduit?
A. 12 inches
, B. 18 inches
C. 24 inches
D. 36 inches
Correct Answer: C. 24 inches
14. Using the correct tools for hand digging is called:
A. Controlled excavation
B. Safe digging
C. Prudent excavation techniques
D. Manual excavation practice
Correct Answer: C. Prudent excavation techniques
15. What worksite protection can be used in TTC areas?
A. Barricades only
B. Flags, cones, and signs
C. Tape only
D. Lights only
Correct Answer: B. Flags, cones, and signs
16. Which publication provides guidance for temporary traffic control?
A. OSHA 1926
B. ANSI B30.5
C. Manual on Uniform Traffic Control Devices (MUTCD) Chapter 6
D. NFPA 70E
Correct Answer: C. Manual on Uniform Traffic Control Devices (MUTCD)
Chapter 6
17. Which is one of the seven fundamental principles of TTC?
A. Increase traffic speed
B. Protect people passing through the work zone
C. Eliminate signage
D. Use minimal barriers
Correct Answer: B. Protect people passing through the work zone
