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100+ Free NM CID GA-1 Practice Questions

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2026 Statistics

Key Facts: NM CID GA-1 Exam

75%

Passing Score

PSI NM Contractor Bulletin 4/3/2026

60 Q

Official Exam Questions

PSI NM Contractor Bulletin 4/3/2026

185 min

Time Allowed

PSI NM Contractor Bulletin 4/3/2026

USD 68.88

PSI Exam Fee

PSI NM Contractor Bulletin 4/3/2026

NM CID GA-1 is a 60-question PSI streets/roads/highways exam, 75% pass, 185 minutes, USD 68.88 (bulletin 4/3/2026).

Sample NM CID GA-1 Practice Questions

Try these sample questions to test your NM CID GA-1 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1On an NMDOT hot-mix asphalt overlay, what is the primary purpose of a tack coat?
A.To waterproof the existing pavement so water cannot enter the base
B.To bond the existing surface to the new asphalt course
C.To rejuvenate oxidized binder in the old pavement
D.To prime a raw aggregate base before the first asphalt lift
Explanation: NMDOT Section 407 uses tack coat to produce a residual asphalt film that bonds an existing pavement, concrete, or previously placed lift to the new HMA course. Without that bond the overlay can shove or delaminate under traffic. Prime coat, not tack coat, is the treatment used on an untreated aggregate base.
2Per NMDOT 2019 Section 423.3.5.1, the Contractor shall not place hot-mix asphalt on which of the following surfaces?
A.A dry milled asphalt surface that has been tacked
B.A dry concrete pavement that has been tacked
C.A wet or frozen surface
D.A previously placed HMA lift that has cooled overnight
Explanation: NMDOT 423.3.5.1 forbids placing HMA on wet or frozen surfaces, or whenever weather prevents proper handling, finishing, and compacting. Moisture and ice keep the mix from bonding and from reaching density. A dry, properly tacked asphalt or concrete surface is an acceptable paving platform.
3Per NMDOT 2019 Section 423.3.5.1, HMA may be placed when the Chill Factor is at least which value and rising?
A.32 °F and rising
B.35 °F and rising
C.40 °F and rising
D.50 °F and rising
Explanation: NMDOT defines Chill Factor as ambient temperature in degrees Fahrenheit minus wind velocity in miles per hour. Section 423.3.5.1 requires the Chill Factor to be at least 40 °F and rising before placing HMA. If the air temperature is 60 °F or warmer, Chill Factor is not considered. Warm-mix asphalt uses a lower 35 °F Chill Factor under Section 424.
4Per NMDOT 2019 Section 423.3.5.1, when the air temperature is 60 °F or warmer, how is Chill Factor treated for HMA placement?
A.Chill Factor must still be at least 40 °F
B.Do not consider the Chill Factor
C.Add 10 °F to the measured Chill Factor
D.Paving is prohibited regardless of Chill Factor
Explanation: When the air temperature is 60 °F or warmer, NMDOT 423.3.5.1 directs the Contractor not to consider Chill Factor. The wind-adjusted value is a cool-weather control, not a year-round gate. The surface still must not be wet or frozen, and weather must still allow proper compaction.
5Per NMDOT 2019 Section 423.3.5.2, what may be used to keep HMA from sticking to roller wheels?
A.Diesel fuel sprayed lightly on the drums
B.Kerosene or other petroleum diluents
C.Water, or water mixed with a very small quantity of detergent or other approved material
D.Used motor oil wiped on the drums
Explanation: NMDOT 423.3.5.2 requires roller wheels to be moistened with water, or water mixed with a very small quantity of detergent or another approved material. Diesel fuel and other petroleum diluents are expressly prohibited because they soften the asphalt binder and stain the mat. Petroleum products on drums are a common field shortcut and a spec violation.
6Per NMDOT 2019 Section 407.3.4, the Project Manager sets the tack-coat spray rate to provide what residual asphalt-cement content?
A.0.01 to 0.03 gal per square yard
B.0.04 to 0.08 gal per square yard
C.0.15 to 0.25 gal per square yard
D.0.30 to 0.50 gal per square yard
Explanation: NMDOT 407.3.4 requires a uniform distributor application that leaves a residual asphalt-cement content of 0.04 to 0.08 gallons per square yard. Residual, not emulsion, is the controlling quantity because emulsions are diluted. A film in that range bonds the overlay without creating a slip plane or pickup on truck tires.
7Per NMDOT 2019 Section 423.3.5.4, longitudinal joints in successive HMA courses shall be offset at least how far from the joint in the underlying course?
A.2 inches
B.6 inches
C.12 inches
D.24 inches
Explanation: NMDOT 423.3.5.4 requires longitudinal joints to be offset at least 6 inches from the joint in the course below. Stacking joints creates a continuous vertical plane that is weak in shear and lets water in. The same subsection also tells the Contractor to keep those joints out of the wheel paths unless the Project Manager approves otherwise.
8Per NMDOT 2019 Section 423.3.5.4, where shall the Contractor avoid placing HMA longitudinal joints unless the Project Manager approves otherwise?
A.At the centerline of a two-lane road
B.In the wheel paths
C.At the pavement edge next to the shoulder
D.Over a previously milled surface
Explanation: NMDOT 423.3.5.4 directs the Contractor to avoid placing longitudinal joints in the wheel paths unless the Project Manager approves. Wheel-path joints take repeated load at the weakest part of the mat and fail early. Joints should fall near lane lines or outside the wheel tracks.
9Per NMDOT 2019 Section 423.3.5.4, unless otherwise specified, a transverse HMA joint shall have at least which taper?
A.A 1 ft taper with a slope no steeper than 6:1
B.A 3 ft taper with a slope no steeper than 24:1
C.A 10 ft taper with a slope no steeper than 50:1
D.A vertical butt joint with no taper
Explanation: NMDOT 423.3.5.4 requires at least a 3-foot taper on transverse joints, with a slope no steeper than 24:1. Before the next day's paving the taper is cut and squared, then cleaned and tacked so the new mix bonds. A 1-foot, 6:1 taper is the longitudinal-joint rule, not the transverse rule.
10When paving under traffic, NMDOT 2019 Section 423.3.5.4 limits how long a tapered longitudinal HMA joint may remain exposed. What is that limit?
A.24 hours
B.3 days
C.7 days
D.14 days
Explanation: NMDOT 423.3.5.4 requires daily surfacing to be scheduled so that tapered longitudinal joints are not exposed longer than 7 days when paving under traffic. An open taper ravels, collects dirt, and is a drop-off hazard. After 7 days the joint must be completed or otherwise protected.

About the NM CID GA-1 Exam

The New Mexico CID GA-1 examination covers streets, roads, and highways. The official open-book PSI exam has 60 scored questions, a 75% passing standard (45 points), and 185 minutes allowed. Approved references include OSHA 29 CFR 1926, PCA Design and Control of Concrete Mixtures (17th, 2021), Pipe and Excavation Contracting, Hot-Mix Asphalt Paving Handbook, MUTCD 2003, New Mexico Specifications for Highway and Bridge Construction 2019, EPA stormwater construction guidance, Asphalt in Pavement Maintenance MS-16, New Mexico One Call Excavator Handbook 2004, and NMDOT standard drawings. PSI lists the fee at USD 68.88 (bulletin updated 4/3/2026). This English-language MCQ bank is a study aid, not an official PSI form.

Questions

60 scored questions

Time Limit

185 minutes

Passing Score

75% (45 of 60 points)

Exam Fee

USD 68.88 (PSI Services LLC (for New Mexico Construction Industries Division))

NM CID GA-1 Exam Content Outline

25%

Bituminous Surface Treatments and Pavement

Asphalt surfaces (15 items)

20%

Earthwork

Earthwork and grading (12 items)

17%

Project Management

Planning, estimating, basis of payment, One Call (10 items)

8%

Heavy Equipment / Safety

Equipment and OSHA safety (5 items)

8%

Portland Cement Surface Treatments and Pavement

Concrete pavement (5 items)

7%

Erosion Control

Erosion and sediment control (4 items)

7%

Surveying

Highway surveying (4 items)

8%

Miscellaneous

Curbs, gutters, barriers, fences, signs (5 items)

How to Pass the NM CID GA-1 Exam

What You Need to Know

  • Passing score: 75% (45 of 60 points)
  • Exam length: 60 questions
  • Time limit: 185 minutes
  • Exam fee: USD 68.88

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NM CID GA-1 Study Tips from Top Performers

1Bituminous pavement is the largest domain (15 of 60). Study NMDOT 2019 specs with MUTCD 2003 and NM One Call.
2This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the NM GA-1 exam?

The official PSI examination has 60 scored questions. Passing is 75% (45 points) within 185 minutes (bulletin updated 4/3/2026).