A barricade has stripes slanting down to the right. How should traffic pass it?
- Traffic must stop
- Over the top
- On the left side
- On the right side
Show the answer
On the right side
A V-shaped pattern means the road is closed.
Idaho Road Signs practice test
Practice what signs mean and what to do when you see them: 89 questions based on the Idaho Driver's Handbook, 11 of them on Idaho's own rules.
Key Idaho facts: Road Signs
- Regulatory signs are generally black and white (some red and white), most warning signs are black on a yellow diamond, and work zone warning signs are orange and black. Traffic Signs, PDF p. 44; Work Zone Signs, PDF p. 46; Warning Signs, PDF p. 49
- Guide signs are white on green for directions and distances, white on blue for motorist services and white on brown for recreational, cultural or scenic sites. Guide Signs, PDF p. 53
- The pennant-shaped No Passing Zone sign stands on the left side of the road and marks a no-passing zone for your lane. Warning Signs, No Passing Zone, PDF p. 52
- The Open Range sign warns that livestock may roam unfenced and have the right-of-way. Warning Signs, Open Range, PDF p. 49
- School zone and school crossing signs may be yellow or fluorescent yellow-green, and violating school zone speed limits carries increased penalties. Warning Signs, School Zone and School Crossing, PDF pp. 50-51
Sample Road Signs questions
What does an Open Range warning sign tell you?
- There are no fences or guardrails
- Hunting is allowed nearby
- The road has no speed limit
- Livestock may roam freely on the road
Show the answer
Livestock may roam freely on the road
Livestock on open range have the right-of-way.
Source: Idaho Driver's Handbook, Warning Signs, Open Range, PDF p. 49
A white-on-brown guide sign points to what kind of place?
- A hospital or other emergency service
- The distance to the next highway exit
- A recreational, cultural or scenic site
- Gas, food and lodging for travelers
Show the answer
A recreational, cultural or scenic site
Blue signs show motorist services and green signs give directions.
What colors are most warning signs?
- Black on yellow
- White on green
- White on blue
- Black on white
Show the answer
Black on yellow
Most are diamond-shaped.
You see a Road Closed to Thru Traffic sign. Who may enter?
- No one at all, including local residents
- Only people with a stop inside the zone
- Only police, fire and ambulance crews
- Anyone, if they drive at reduced speed
Show the answer
Only people with a stop inside the zone
Continuous trips through the work zone are not allowed.
What color may school zone and school crossing signs be in Idaho?
- Blue or reflective white
- Yellow or fluorescent yellow-green
- White or fluorescent bright orange
- Orange or fluorescent pink
Show the answer
Yellow or fluorescent yellow-green
School zone speed violations bring increased penalties.
Source: Idaho Driver's Handbook, Warning Signs, School Zone and School Crossing, PDF pp. 50-51
What does a 3-way intersection warning sign mean?
- There is a traffic circle with three exits ahead
- The road ends ahead, and you must turn left or right
- A side road joins your road from the right ahead
- Three lanes ahead will merge into a single lane
Show the answer
The road ends ahead, and you must turn left or right
Stop and yield to drivers coming from the other two directions.
Source: Idaho Driver's Handbook, Warning Signs, 3-Way Intersection, PDF p. 49
What is the blue Emergency Notification System sign at a railroad crossing for?
- Finding the nearest hospital
- Reporting a problem to the railroad
- Marking a safe place to stop and wait
- Showing when the next train will pass
Show the answer
Reporting a problem to the railroad
It lists the railroad's phone number and the crossing's number.
Source: Idaho Driver's Handbook, Warning Signs, Emergency Notification System Sign, PDF p. 53
What do white-on-blue guide signs tell you about?
- Road work
- Directions and distances
- Scenic areas
- Motorist services
Show the answer
Motorist services
Services include fuel, food and lodging.
What colors are work zone warning signs?
- Red and white
- Orange and black
- Yellow and black
- Green and white
Show the answer
Orange and black
Work zones are also marked with cones, drums and barricades.
More Idaho practice
- Full practice testAll topics, as in the knowledge test
- Right-of-WayWho goes first at intersections, crosswalks and roundabouts31 questions, 13 on Idaho rules
- Traffic SignalsLights, arrows and pedestrian signals21 questions, 12 on Idaho rules
- Lanes & TurnsLane markings, turns, passing and merging32 questions, 11 on Idaho rules
- Speed LimitsLimits and how to adjust your speed22 questions, 10 on Idaho rules
- ParkingCurb colors, hills and where you can't park23 questions, 11 on Idaho rules
- Safe DrivingFollowing distance, weather, night driving and sharing the road55 questions, 22 on Idaho rules
- Alcohol & DrugsBlood alcohol limits, DUI rules and medication32 questions, 14 on Idaho rules
- EmergenciesBreakdowns, emergency vehicles and railroad crossings23 questions, 14 on Idaho rules
- License RulesPermits, restrictions for new drivers and points28 questions, 28 on Idaho rules
- Insurance & CollisionsRequired coverage and what to do after a crash22 questions, 10 on Idaho rules
- Phones & DistractionPhone rules and other distractions18 questions, 11 on Idaho rules
About these questions
We wrote these practice questions from the facts in the Idaho Driver's Handbook (Idaho Driver's Handbook, July 2026 edition (cover dated JULY 2026; driver_manual.pdf in ITD's 2026/04 uploads, 139 PDF pages, form number 01-9530906 on the back cover), the handbook linked from ITD's 'Taking the Driver's Test' guide, read 2026-11-10. The older upload path (wp-content/uploads/2016/06/driver_manual.pdf) served a byte-identical file on 2026-11-10. Page numbers cited are PDF pages, which equal the printed page numbers. PDF page 67 (highway map) and the sign illustrations have no text and were not used. Page 2 states that the handbook paraphrases Idaho statutes and that courts follow the statutes, so every legal rule used in questions was checked against the Idaho Code on legislature.idaho.gov (Title 49, Title 18 chapter 80 and 23-505, read 2026-11-10, with the 2026 amendment history shown on each section). Questions follow the statute. Out-of-date or inconsistent handbook statements and how they were handled: (1) Cell phones (PDF pp. 92-93) describe only a ban on reading, writing or sending text messages, with no points and a moving violation only for commercial drivers. Since July 1, 2020 (fines from January 1, 2021) Idaho Code 49-1401A bans operating a motor vehicle while using any mobile electronic device, including while stopped in traffic, except hands-free or voice use with one touch, emergency calls and hands-free navigation; it is a moving infraction ($75, $150 for a second within three years, $300 after that), three convictions in three years allow a court suspension up to 90 days, a first conviction carries no points, and it is a primary offense. Questions follow the statute; no question uses the handbook's texting-only description. (2) Signal timing: PDF p. 72 says five seconds 'on freeways or highways' and PDF p. 87 'five seconds or 100 feet'; Idaho Code 49-808(2) requires five seconds on controlled-access highways and when leaving a parked position, and the last 100 feet in all other cases. Questions use the statute (100 feet on city streets, five seconds on freeways); signal_before_turn_ft is 100. (3) High-beam dimming: PDF p. 43 says dim 200 feet before overtaking; Idaho Code 49-923(3) requires low beams when following within 200 feet except while actually overtaking and passing. Questions and dim_following_ft use the statute's wording. (4) School bus: PDF p. 70 says opposing traffic need not stop on highways with four or more lanes and two lanes in each direction; Idaho Code 49-1422(1) exempts oncoming traffic on a highway of more than three lanes. The question uses the statute. (5) Passing speed exception (PDF p. 77) covers only two-lane roads; 2026 amendments to Idaho Code 49-654(2)(b) also allow it in passing lanes posted 55 mph or more outside cities. The question is limited to the two-lane case, which both state. (6) Freeway speeds: PDF pp. 83 and 85 say up to 80 mph on rural and 65 mph on urban interstates; Idaho Code 49-654(2)(a) sets 75 mph on interstates unless posted (80 after a study) and 35 mph in urban districts unless posted. Questions use the statute's defaults (PDF p. 68 matches it). (7) Skills test order: PDF p. 33 says the knowledge and skills tests may be taken in either order, while ITD's 'Taking the Driver's Test' page says the knowledge test must be passed first except by applicants under 17 on a supervised instruction permit; not tested. (8) The handbook's bicycle passing distance of at least three feet (PDF pp. 98, 101) is advice; Idaho Code 49-632(1) requires only a safe distance, so bicycle_pass_ft is left open and the one question on it asks what the handbook recommends. (9) Seat belts (PDF p. 41: all occupants) are limited by Idaho Code 49-673 to vehicles up to 8,000 pounds, with secondary enforcement and a $10 fine; the question reflects the statute. Insurance minimums (25/50/15) are not in the handbook and come from Idaho Code 49-117(20) and 49-1229. DUI, test refusal and administrative suspension penalties (PDF pp. 125-127, 131-132), crash reporting over $1,500 (PDF pp. 119, 121), parking distances (PDF p. 81), railroad stopping distance (PDF p. 60), move-over (PDF p. 95), the GDL rules (PDF pp. 15-19) and GDL penalties (PDF p. 125) match the current statutes. edition) and from official sources on road signs. Every answer links to its source, so you can check it and read more.
DMV Decoded is an independent guide, not a government agency. This practice test is not connected to the Idaho Transportation Department, Division of Motor Vehicles, and your actual test will have different questions. Study the handbook, and check the agency's website for current rules.