Warning and work zone signs in Idaho
The Idaho Driver's Handbook shows or names everything on this page: 31 in all, on pages 46–54, 62.
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Warning signs
Slow Moving Vehicle Sign
You are approaching a slow moving vehicle. You should slow down and approach the vehicle with caution. This sign is primarily used on off road vehicles (farm equipment, construction equipment, etc.).
Manual page 47 · Open this page in the manual (Manual page 47)
ROAD CLOSED TO THRU TRAFFIC (Yellow Diamond)
“Road Closed To Thru Traffic” or “Road Closed, Local Traffic Only” signs mean that the work zone is open to local residential or commercial traffic, but the traffic must not use the work zone as a travel route unless they have a reason to stop within the work zone.
Manual page 47 · Open this page in the manual (Manual page 47)
SLOW DOWN!
Slow down. Fines for speeding are increased in work zones where the signage indicates.
Manual page 48 · Open this page in the manual (Manual page 48)
OPEN RANGE
You are traveling in an area where livestock have the right-of-way and are allowed to roam freely and unfenced.
Manual page 49 · Open this page in the manual (Manual page 49)
3-Way Intersection
You are approaching a 3-way “T” intersection and will have to turn either to the right or the left. You must stop and yield to drivers approaching from the other two directions.
Manual page 49 · Open this page in the manual (Manual page 49)
Intersection / Crossroad
There is another road ahead which crosses the road you are on. Watch carefully for cross-traffic in your path.
Manual page 49 · Open this page in the manual (Manual page 49)
Traffic Signal Ahead
These signs are used on roads with higher speeds or where the view of the intersection or light is blocked. Be ready for an intersection and a stop light.
Manual page 49 · Open this page in the manual (Manual page 49)
Merging Traffic
If you are on the main road and see this sign, be prepared for other cars and trucks entering into your lane.
Manual page 50 · Open this page in the manual (Manual page 50)
Two-Way Traffic
This sign warns about a transition from a multi-lane divided highway to a two-lane, two-way section of highway.
Manual page 50 · Open this page in the manual (Manual page 50)
Lane Ends / Merge Left
Two lanes of traffic will soon become one lane of traffic. Merging traffic must yield.
Manual page 50 · Open this page in the manual (Manual page 50)
Added Lane
Two highways are converging. Watch for traffic in the left lane which may move into the right lane. Before moving into the left lane (if needed) check to make sure it is clear while signaling before changing lanes.
Manual page 50 · Open this page in the manual (Manual page 50)
School Zone
You are nearing a school area with a crossing. Watch for children and the marked school crossing. There are increased penalties for violation of school zone speed limits. The color of this sign may be yellow or fluorescent yellow/green.
Manual page 50 · Open this page in the manual (Manual page 50)
School Crossing
Watch out for children, reduce speed, and obey crossing guard signals. The color of this sign may be yellow or fluorescent yellow/green.
Manual page 51 · Open this page in the manual (Manual page 51)
Pedestrian Crossing
Watch out for people crossing the road. Pedestrians have the right-of-way, and you may have to stop for them. The color of this sign may be fluorescent yellow/green. The sign may have flashing lights that indicate a pedestrian is crossing.
Manual page 51 · Open this page in the manual (Manual page 51)
Divided Highway Begins
You are getting close to the place where two-way traffic will be divided by a center strip.
Manual page 51 · Open this page in the manual (Manual page 51)
Divided Highway Ends
Two-way traffic ahead will no longer be divided by a center strip. Watch out for oncoming cars.
Manual page 51 · Open this page in the manual (Manual page 51)
Low Clearance 12'-6"
Indicates the overhead clearance above the highway is very low.
Manual page 51 · Open this page in the manual (Manual page 51)
Slippery When Wet
Road ahead may become slippery in wet weather. Slow down under these conditions.
Manual page 52 · Open this page in the manual (Manual page 52)
Hill
This sign is a warning to all vehicles that the road goes down a steep hill. You should check your brakes before going down the hill.
Manual page 52 · Open this page in the manual (Manual page 52)
NO PASSING ZONE
This pennant-shaped sign will be on the left-hand side of the road or highway in addition to a “DO NOT PASS” sign or pavement markings. It warns you of a no passing zone for your lane of traffic.
Manual page 52 · Open this page in the manual (Manual page 52)
SHARE THE ROAD.... EVERY LIFE COUNTS
This sign is placed below a bicycle symbol sign and is used on highways where bike lanes are not provided. It serves as a warning to drivers and bicyclists that they need to share the highway. The signs may be placed where there are narrow lanes, narrow shoulders, high traffic volumes or speeds.
Manual page 52 · Open this page in the manual (Manual page 52)
Bicycle Warning (Symbol)
The manual does not state it
Manual page 52 · Open this page in the manual (Manual page 52)
DEER XING
Watch for animals crossing the highway.
Manual page 53 · Open this page in the manual (Manual page 53)
Roundabout Ahead
The most common sign seen when approaching a roundabout is a warning sign with an arrow in a circle pattern.
Manual page 62 · Open this page in the manual (Manual page 62)
Work zone signs
Lane Shift
All lanes will shift according to the sign. Stay in your lane as it shifts slightly.
Manual page 46 · Open this page in the manual (Manual page 46)
Be Prepared to Stop (Flagger Symbol)
Slow down and be prepared to stop for road work ahead.
Manual page 47 · Open this page in the manual (Manual page 47)
ROAD CLOSED
“Road Closed” signs mean that the work zone cannot be entered, except by authorized personnel.
Manual page 47 · Open this page in the manual (Manual page 47)
Barricade: V Pattern (Road Closed)
The V-shaped pattern on this barricade means that the road is closed and traffic can proceed no further.
Manual page 54 · Open this page in the manual (Manual page 54)
Barricade: Stripes Angle Down to the Left
The lines on this barricade angle down to the left, indicating that traffic must pass the barricade on the left side.
Manual page 54 · Open this page in the manual (Manual page 54)
Barricade: Stripes Angle Down to the Right
The lines on this barricade angle down to the right, indicating that traffic must pass the barricade on the right side.
Manual page 54 · Open this page in the manual (Manual page 54)
Barricade with Flashing Light
The barricades may have flashing lights on them especially at night.
Manual page 54 · Open this page in the manual (Manual page 54)