Idaho: Emergency vehicles and work zones — Part 1 Practice Test
Questions in this part include: “On which vehicles is the slow moving vehicle sign primarily used?” · “Which colors are permanent barricades?”
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Questions are original and based on the official manual "Idaho Driver's Handbook" (July 2026), Idaho Transportation Department.
All 24 questions in this practice test
Take the test above first, then use this list to study. Tap “Show answer” to see the correct answer and explanation.
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Which hazards does the manual tell you to be aware of when traveling through work zones?
- Steep hills, dense fog, deep snow, and black ice
- Low bridges, railroad crossings, school buses, and tolls
- Roundabouts, one-way streets, bike lanes, and median strips
- Uneven pavement, narrow lanes, heavy equipment, and gravel
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Correct answer: Uneven pavement, narrow lanes, heavy equipment, and gravel
The manual lists uneven pavement, narrow lanes, heavy equipment, and gravel as work zone hazards.
Source: Idaho Driver's Handbook (July 2026), page 46 · Open this page in the manual (Manual page 46)
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What does the manual say to do about barriers and signs on a road that is closed to traffic?
- Drive around them slowly if no workers are in sight
- Move them aside only when you are driving a large vehicle
- Do not go around or move them to cross over the road
- Go around them only during daylight hours
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Correct answer: Do not go around or move them to cross over the road
Barriers and signs on a closed road must not be gone around or moved to cross over the road.
Source: Idaho Driver's Handbook (July 2026), page 46 · Open this page in the manual (Manual page 46)
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An orange diamond-shaped sign shows two parallel arrows that curve to one side. What should you do?
- Move to the opposite lane because your lane will close
- Stay in your lane as all lanes shift according to the sign
- Prepare to stop because a flagger is ahead
- Slow down and approach a slow moving vehicle with caution
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Correct answer: Stay in your lane as all lanes shift according to the sign
On a Lane Shift sign, all lanes will shift according to the sign and you stay in your lane as it shifts slightly.
Source: Idaho Driver's Handbook (July 2026), page 46 · Open this page in the manual (Manual page 46)
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An orange diamond-shaped sign shows a figure holding a flag. What should you do?
- Stop at once and wait until the road work crew has left
- Keep your speed and change lanes before the road work
- Yield to workers crossing the road ahead and then speed up
- Slow down and be prepared to stop for road work ahead
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Correct answer: Slow down and be prepared to stop for road work ahead
The Be Prepared to Stop sign means to slow down and be prepared to stop for road work ahead.
Source: Idaho Driver's Handbook (July 2026), page 47 · Open this page in the manual (Manual page 47)
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What should you do when you see a slow moving vehicle sign on the road ahead?
- Slow down and approach the vehicle with caution
- Pass the vehicle immediately before it slows traffic
- Follow closely behind it to save fuel
- Stop and wait until it leaves the road
Show answer
Correct answer: Slow down and approach the vehicle with caution
A slow moving vehicle sign means you should slow down and approach the vehicle with caution.
Source: Idaho Driver's Handbook (July 2026), page 47 · Open this page in the manual (Manual page 47)
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On which vehicles is the slow moving vehicle sign primarily used?
- Large trucks hauling oversized loads on highways
- Passenger cars and trailers traveling in work zones
- Off road vehicles such as farm and construction equipment
- Emergency vehicles on their way to a crash scene
Show answer
Correct answer: Off road vehicles such as farm and construction equipment
The slow moving vehicle sign is primarily used on off road vehicles such as farm and construction equipment.
Source: Idaho Driver's Handbook (July 2026), page 47 · Open this page in the manual (Manual page 47)
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What does a "Road Closed" sign in a work zone mean?
- The work zone can be entered by anyone who drives slowly
- The work zone cannot be entered, except by authorized personnel
- The work zone can be entered only after stopping to check for workers
- The work zone can be entered only by drivers who have lights on
Show answer
Correct answer: The work zone cannot be entered, except by authorized personnel
A Road Closed sign means the work zone cannot be entered except by authorized personnel.
Source: Idaho Driver's Handbook (July 2026), page 47 · Open this page in the manual (Manual page 47)
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Under a "Road Closed To Thru Traffic" sign, who may use the work zone?
- Any vehicle, as long as it does not stop within the work zone
- Only authorized personnel and emergency vehicles
- Any driver who has no other route to the destination
- Local traffic that has a reason to stop within the work zone
Show answer
Correct answer: Local traffic that has a reason to stop within the work zone
Such signs mean the work zone is open to local residential or commercial traffic, but only traffic with a reason to stop within the work zone.
Source: Idaho Driver's Handbook (July 2026), page 47 · Open this page in the manual (Manual page 47)
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When closure signs are properly placed, what is prohibited?
- Continuous trips through a work zone
- Stopping within a work zone for any reason
- Driving through a work zone at night
- Driving through a work zone in rain or snow
Show answer
Correct answer: Continuous trips through a work zone
When closure signs are properly placed, continuous trips through a work zone are prohibited.
Source: Idaho Driver's Handbook (July 2026), page 47 · Open this page in the manual (Manual page 47)
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What happens to fines for speeding in work zones where the signage indicates?
- They are waived when no workers are present
- They are the same as on any other road
- They are increased
- They are lowered when traffic is heavy
Show answer
Correct answer: They are increased
Fines for speeding are increased in work zones where the signage indicates.
Source: Idaho Driver's Handbook (July 2026), page 48 · Open this page in the manual (Manual page 48)
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How close to traffic can highway workers in a work zone be?
- At least one full traffic lane away
- Just inches away
- Safely behind a barrier at all times
- About 50 feet from the traffic lane
Show answer
Correct answer: Just inches away
Workers in a work zone are just inches away from traffic, working both night and day.
Source: Idaho Driver's Handbook (July 2026), page 48 · Open this page in the manual (Manual page 48)
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What does the manual say about following distance in a work zone?
- Follow closely so that traffic moves through the work zone faster
- Match the following distance of the car ahead, however close it is
- Leave extra space only when workers are visible beside the road
- Do not follow too closely; leave plenty of space between you and the car ahead
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Correct answer: Do not follow too closely; leave plenty of space between you and the car ahead
In a work zone you should not follow too closely and should leave plenty of space between you and the car ahead.
Source: Idaho Driver's Handbook (July 2026), page 48 · Open this page in the manual (Manual page 48)
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What does the manual suggest you do to plan ahead for a work zone?
- Allow a few extra minutes and minimize distractions
- Drive faster before the zone to make up the time
- Follow a truck closely to learn the lane changes
- Turn up the car stereo to stay alert in slow traffic
Show answer
Correct answer: Allow a few extra minutes and minimize distractions
The manual says to allow for a few extra minutes and to minimize distractions such as a cell phone and the car stereo.
Source: Idaho Driver's Handbook (July 2026), page 48 · Open this page in the manual (Manual page 48)
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Which of these is named as a cause of crashes in work zones?
- Driving with headlights on
- Driving below the speed limit
- Improper lane changes
- Leaving too much space ahead
Show answer
Correct answer: Improper lane changes
Speeding, inattentive driving, failing to yield the right-of-way, and improper lane changes contribute to work zone crashes.
Source: Idaho Driver's Handbook (July 2026), page 48 · Open this page in the manual (Manual page 48)
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Which colors are permanent barricades?
- Red and white
- Orange and white
- Blue and white
- Green and white
Show answer
Correct answer: Red and white
The manual says barricades are red and white when permanent.
Source: Idaho Driver's Handbook (July 2026), page 54 · Open this page in the manual (Manual page 54)
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Which colors are temporary barricades?
- Red and white
- Blue and white
- Orange and white
- Green and white
Show answer
Correct answer: Orange and white
The manual says barricades are orange and white when temporary.
Source: Idaho Driver's Handbook (July 2026), page 54 · Open this page in the manual (Manual page 54)
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How do the instructions of red and white barricades compare with those of orange and white barricades?
- They are the same
- Red barricades mean the road is closed, orange ones mean slow down
- Orange barricades must be obeyed, red ones are only advice
- Red barricades apply at night and orange ones by day
Show answer
Correct answer: They are the same
The manual says that even though barricades can be of different colors, the instructions they give to drivers are the same.
Source: Idaho Driver's Handbook (July 2026), page 54 · Open this page in the manual (Manual page 54)
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How many types of barricades are placed in the road when a lane or road is closed to traffic?
- Two
- Four
- Three
- Five
Show answer
Correct answer: Three
The manual says one of three types of barricades will be placed in the road as a warning to drivers.
Source: Idaho Driver's Handbook (July 2026), page 54 · Open this page in the manual (Manual page 54)
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A barricade has a V-shaped pattern. What does it mean?
- Traffic must pass the barricade on the left side
- The road is closed and traffic can proceed no further
- Traffic must pass the barricade on the right side
- Only one lane is closed and traffic may merge
Show answer
Correct answer: The road is closed and traffic can proceed no further
The V-shaped pattern means the road is closed and traffic can proceed no further.
Source: Idaho Driver's Handbook (July 2026), page 54 · Open this page in the manual (Manual page 54)
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The lines on a barricade angle down to the left. What must traffic do?
- Pass the barricade on the right side
- Stop because the road is closed
- Turn around and use another route
- Pass the barricade on the left side
Show answer
Correct answer: Pass the barricade on the left side
Lines angling down to the left indicate that traffic must pass the barricade on the left side.
Source: Idaho Driver's Handbook (July 2026), page 54 · Open this page in the manual (Manual page 54)
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The lines on a barricade angle down to the right. What must traffic do?
- Pass the barricade on the left side
- Stop because the road is closed
- Pass the barricade on the right side
- Wait for a flagger to wave you through
Show answer
Correct answer: Pass the barricade on the right side
Lines angling down to the right indicate that traffic must pass the barricade on the right side.
Source: Idaho Driver's Handbook (July 2026), page 54 · Open this page in the manual (Manual page 54)
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What may barricades have on them, especially at night?
- Flashing lights
- Reflective flags that wave in the wind
- Painted speed limits
- Printed detour maps
Show answer
Correct answer: Flashing lights
The manual says barricades may have flashing lights on them, especially at night.
Source: Idaho Driver's Handbook (July 2026), page 54 · Open this page in the manual (Manual page 54)
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What can result from violating a speed limit in a designated work zone?
- A written warning only
- Mandatory towing of your vehicle
- A required retest of your license
- An enhanced, fixed penalty
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Correct answer: An enhanced, fixed penalty
You must observe posted speed limits in designated work zones; violating a work zone speed limit can result in an enhanced, fixed penalty.
Source: Idaho Driver's Handbook (July 2026), page 69 · Open this page in the manual (Manual page 69)
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When does Idaho law require you to stop for a police officer?
- Only if you have broken a traffic law
- Upon the request of any police officer
- Only when you are inside city limits
- Only when the officer's car has a siren on
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Correct answer: Upon the request of any police officer
Idaho law requires you to stop upon the request of any police officer.
Source: Idaho Driver's Handbook (July 2026), page 70 · Open this page in the manual (Manual page 70)