E
.
Learndmv
DMV PRACTICE
Toggle navigation
Find your state
Exam types
Practice tests
Sign in
Create account
↗
← Leave quiz
NM CID GA-5 Practice Questions - New Mexico CID GA-5 Highway Signs and Guard Rails Examination Exam
Practice mode
Question
1
of 25
QUESTION 1 / 25
Per NMDOT 2019 Section 606.2.1, which four guardrail types are specified for metal-barrier work?
Choose one answer below.
A
Single-face W-beam, double-faced W-beam, single-face thrie beam, and double-faced thrie beam
✓
B
Cable median only, box-beam only, G1 cable, and G2 weak-post
✓
C
Concrete Jersey only, F-shape only, constant-slope, and single-slope
✓
D
Timber post-and-rail, stone masonry, chain-link, and stock fence
✓
QUESTION 2 / 25
Per NMDOT 2019 606.2.1.1.1, galvanized W-beam rail elements shall meet which AASHTO designation?
Choose one answer below.
A
ASTM A 615 Grade 60 reinforcing bar
✓
B
AASHTO M 180, Type 2, Class A
✓
C
AASHTO M 111, Type 1, Class B only
✓
D
AASHTO M 36, Type I corrugated pipe
✓
QUESTION 3 / 25
Per NMDOT 2019 606.3.1.2, in which direction shall W-beam and thrie-beam rail elements be overlapped?
Choose one answer below.
A
Always toward the nearest bridge abutment regardless of traffic
✓
B
Alternating left and right at every splice
✓
C
In the same direction as the traffic flow of the nearest lane
✓
D
Against traffic so the upstream end sits on top
✓
QUESTION 4 / 25
Per NMDOT 2019 606.2.4, a W-beam TL-3 end terminal may be used for which posted speeds?
Choose one answer below.
A
Only posted speeds of 40 mph or less
✓
B
Only posted speeds of 25 mph or less
✓
C
Only posted speeds greater than 70 mph
✓
D
All posted speeds
✓
QUESTION 5 / 25
Per NMDOT 2019 606.2.4, a W-beam TL-2 end terminal may be used only where the posted speed is:
Choose one answer below.
A
40 mph or less
✓
B
45 mph or greater
✓
C
55 mph only
✓
D
Any posted speed if a TL-3 terminal is unavailable
✓
QUESTION 6 / 25
Per NMDOT 2019 606.3, during construction the Contractor shall prevent which condition at unfinished metal or concrete barrier?
Choose one answer below.
A
Placement of reflective barrier delineators
✓
B
Exposed steel or concrete barrier ends that create a hazard to the traveling public
✓
C
Any temporary concrete wall barrier within the project limits
✓
D
Use of manufacturer-certified installers
✓
QUESTION 7 / 25
Per NMDOT 2019 606.3.1.2, curved W-beam or thrie-beam rails shall be shop-fabricated when the radius is:
Choose one answer below.
A
1,000 ft or less
✓
B
Any radius less than one mile
✓
C
150 ft or less
✓
D
500 ft or less
✓
QUESTION 8 / 25
Per NMDOT 2019 606.3.8, which curb type is not allowed at guardrail drainage installations?
Choose one answer below.
A
Asphalt curb
✓
B
Concrete curb
✓
C
Asphalt curb placed below the offset block with its face aligned to the rail face
✓
D
Metal curb
✓
QUESTION 9 / 25
Per NMDOT 2019 606.2.9, which reflective barrier delineator colors are required?
Choose one answer below.
A
Amber on median barriers and white on shoulder-side barriers
✓
B
Red on all barriers and blue on ramps only
✓
C
Green on medians and yellow on right shoulders only
✓
D
Fluorescent pink on all temporary barrier
✓
QUESTION 10 / 25
Per MUTCD 2003 Section 6F.02, temporary traffic-control warning signs shall have which color combination, except for the W10-1 railroad advance warning sign?
Choose one answer below.
A
Red legend on a white rectangle
✓
B
Black legend and border on an orange background
✓
C
Black legend on a yellow background for all work-zone warnings
✓
D
White legend on a green background
✓
QUESTION 11 / 25
Per NMDOT 2019 606.2.5, which transition type is specifically listed for connecting older rail to current-height rail?
Choose one answer below.
A
Transition from chain-link fence to Type III barricade
✓
B
Transition from sand barrels to painted curb
✓
C
Transition from existing guardrail to 31-inch guardrail
✓
D
Transition from 42-inch cable to 18-inch timber rail
✓
QUESTION 12 / 25
Per NMDOT 2019 606.2.1.4.1, wood offset blocks shall have a stress grade of at least which value, and what size tolerance is allowed in the bolt-hole direction for rough-sawn blocks?
Choose one answer below.
A
600 psi, with a ±1 inch size tolerance
✓
B
2,400 psi, with no size tolerance allowed
✓
C
800 psi, with a ±2 inch size tolerance
✓
D
1,200 psi, with a ±1/4 inch size tolerance
✓
QUESTION 13 / 25
Per NMDOT 2019 606.2.1.4.1, how many combinations of post and block may be used in any one continuous length of barrier?
Choose one answer below.
A
Only one combination
✓
B
Two combinations if they alternate every other post
✓
C
Any mix of wood and composite blocks on steel and timber posts
✓
D
One combination per 12.5 ft rail element
✓
QUESTION 14 / 25
Per NMDOT 2019 606.3.1, who may install guardrail, and when must certifications be provided?
Choose one answer below.
A
The traffic-control technician, after the first rail is set
✓
B
Personnel certified by the manufacturer, with certifications given to the Project Manager before Work begins
✓
C
Any laborer after a one-hour tailgate talk, with no submittal
✓
D
Only Department maintenance crews, after final acceptance
✓
QUESTION 15 / 25
Per NMDOT 2019 606.3.1.1.1, if driving steel posts distresses the asphalt, the Contractor shall drill guide holes with what minimum diameter?
Choose one answer below.
A
12 inches
✓
B
18 inches
✓
C
8 inches
✓
D
4 inches
✓
QUESTION 16 / 25
Per NMDOT 2019 606.3.1.1.1, after compacting a post leave-out, the Contractor shall place how much Section 303 Base Course and apply emulsion within what time?
Choose one answer below.
A
8 inches of Base Course, with emulsion within 7 days
✓
B
1 inch of cold mix only, with no emulsion required
✓
C
6 inches of concrete, with no time limit
✓
D
3 inches of Base Course, with emulsion within 24 hours of compaction
✓
QUESTION 17 / 25
Per NMDOT 2019 606.3.1.1.1, steel posts in asphalt thicker than which depth shall be constructed as steel posts in rock?
Choose one answer below.
A
8 inches
✓
B
3 inches
✓
C
12 inches
✓
D
18 inches
✓
QUESTION 18 / 25
Per NMDOT 2019 606.3.7, unless the Contract specifies otherwise, the ground between the shoulder edge and the hinge point behind the guardrail shall be graded at:
Choose one answer below.
A
Vertical cut immediately behind the posts
✓
B
10:1 (H:V) or flatter
✓
C
2:1 (H:V) or steeper
✓
D
1:1 (H:V) only
✓
QUESTION 19 / 25
Per NMDOT 2019 606.3.8, unless otherwise specified, what minimum thickness of hot/warm-mix asphalt shall be placed and compacted beneath the guardrail area?
Choose one answer below.
A
4 inches
✓
B
8 inches
✓
C
1-1/2 inches
✓
D
1/2 inch
✓
QUESTION 20 / 25
Per NMDOT 2019 606.3.7, embankment material at guardrail shall be compacted to what density?
Choose one answer below.
A
90% of AASHTO T 99 Standard Proctor, Method A
✓
B
100% relative density by ASTM D 4253 only
✓
C
No compaction is required behind metal barrier
✓
D
95% of maximum density per AASHTO T 180 (Modified Proctor), Method D (TTCP Modified)
✓
QUESTION 21 / 25
Per NMDOT 2019 606.3.3.1, the top of completed concrete wall barrier shall not deviate from the Plans by more than:
Choose one answer below.
A
±0.19 inches
✓
B
±1.0 inch
✓
C
±2.0 inches
✓
D
±3.0 inches
✓
QUESTION 22 / 25
Per NMDOT 2019 606.2.1.1.2, weathering guardrail steel shall provide corrosion resistance at least how many times that of plain carbon steel?
Choose one answer below.
A
Equal to galvanized Type 2 Class A
✓
B
Four times
✓
C
Two times
✓
D
Ten times
✓
QUESTION 23 / 25
Per NMDOT 2019 606.2.4, where shall a W-beam end anchor be used?
Choose one answer below.
A
Only on the upstream end of a 70 mph freeway run
✓
B
In place of a TL-3 terminal on any high-speed approach
✓
C
On the downstream end of a W-beam run when a crashworthy TL-3 or TL-2 terminal is not required
✓
D
On every upstream approach end regardless of speed
✓
QUESTION 24 / 25
Per NMDOT 2019 606.2.4, a W-beam driveway end anchor may be used at which locations?
Choose one answer below.
A
The upstream end of a 65 mph mainline run in lieu of a TL-3 terminal
✓
B
Any concrete wall barrier joint
✓
C
Only on double-faced median cable barrier
✓
D
Curved W-beam installations at minor roadway intersections such as driveways and low-speed approaches to the mainline
✓
QUESTION 25 / 25
Per NMDOT 2019 702.2.2.5, construction traffic cones shall be at least which height and weight?
Choose one answer below.
A
28 inches tall and at least 10 lb, with the base alone weighing 7 lb
✓
B
18 inches tall and 3 lb with no specified base weight
✓
C
36 inches tall and 25 lb with a concrete base
✓
D
12 inches tall and 1 lb for daytime use only
✓
← Previous
0 of 25 answered
Next question →
Finish & see results →