
Center lane left turn only (two-way left turn)
The center lane is shared for left turns from both directions.
What to do: Use the center lane only to complete a left turn.
Shape: rectangle vertical · Color: white
Handbook p. 29 ↗New Hampshire road signs
Explore 62 signs and driving illustrations from this course’s handbook edition. Each entry pairs the image with its meaning and a practical action. Use your browser’s Find command to look up a name or a word from a meaning.
Notice the shape and color before reading a sign’s words or symbol. Then connect its meaning with what you should do: stop, yield, adjust your speed, choose a lane, or prepare for a hazard. Signals, markings, and diagrams are included where the handbook uses them to explain a driving rule.
Use the source page link for the surrounding rule. Some illustrations show a complete road situation rather than a standalone roadside sign.
62 entries. Sign images and page references belong to the handbook edition used for the New Hampshire course.

The center lane is shared for left turns from both directions.
What to do: Use the center lane only to complete a left turn.
Shape: rectangle vertical · Color: white
Handbook p. 29 ↗
You may not enter the roadway from this direction.
What to do: Do not drive past this sign in this direction.
Shape: square · Color: red
Handbook p. 28 ↗
Shows which turns each lane must make ahead.
What to do: Get into the lane matching the turn or direction you want.
Shape: rectangle horizontal · Color: white

Traffic in this lane must turn left.
What to do: Get into this lane only if you intend to turn left.
Shape: square · Color: white
Handbook p. 29 ↗
Bicycles are not allowed on this roadway.
What to do: Do not ride a bicycle here; use an alternate route.
Shape: square · Color: white
Handbook p. 28 ↗
Warns against driving after drinking alcohol.
What to do: Never drive after drinking; arrange another way home.
Shape: rectangle vertical · Color: white

Parking is not allowed here.
What to do: Do not park a vehicle in this area.
Shape: square · Color: white
Handbook p. 34 ↗
Parking is prohibited in the striped access aisle.
What to do: Do not park or stop in the access aisle.
Shape: square · Color: yellow
Handbook p. 35 ↗
Right turns are not allowed here.
What to do: Do not turn right; continue straight or choose another lane.
Shape: square · Color: white
Handbook p. 28 ↗
Trucks are not allowed on this roadway.
What to do: Do not drive a truck past this sign.
Shape: square · Color: white
Handbook p. 28 ↗
Turning at this signal is prohibited on a red light.
What to do: Wait for a green light before turning.
Shape: square · Color: white
Handbook p. 29 ↗
U-turns are not allowed here.
What to do: Do not turn around; continue straight or use another route.
Shape: square · Color: white
Handbook p. 28 ↗
This lane may go straight or turn right only.
What to do: Use this lane only to go straight or turn right as marked.
Shape: rectangle vertical · Color: white
Handbook p. 29 ↗
Shows the maximum legal speed under good conditions.
What to do: Do not drive faster than the posted speed limit.
Shape: rectangle vertical · Color: white
Handbook p. 29 ↗
State law requires drivers to yield to pedestrians in the crosswalk.
What to do: Stop and let pedestrians in the crosswalk cross before proceeding.
Shape: rectangle vertical · Color: fluorescent_yellow_green
Handbook p. 43 ↗
Come to a complete stop.
What to do: Stop fully at the line, crosswalk or intersection edge; go only when safe.
Shape: octagon · Color: red
Handbook p. 28 ↗
Traffic in this lane may only go straight.
What to do: Continue straight; do not turn from this lane.
Shape: rectangle vertical · Color: white
Handbook p. 29 ↗
You are driving against traffic; you are going the wrong way.
What to do: Stop safely, then turn around to correct your direction.
Shape: rectangle horizontal · Color: red
Handbook p. 28 ↗
Slow down and let other traffic or pedestrians go first.
What to do: Slow or stop if needed and yield the right-of-way before proceeding.
Shape: triangle · Color: red
Handbook p. 28 ↗
An additional lane begins ahead without merging.
What to do: Continue in your lane; no need to merge for the new lane.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Marks a sharp curve; the road bends sharply right in the direction of the arrow.
What to do: Slow down and follow the curve in the direction the chevron points.
Shape: rectangle vertical · Color: yellow
Handbook p. 28 ↗
Warns of a four-way intersection ahead.
What to do: Slow down and watch for cross traffic.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Road curves to the left ahead.
What to do: Slow down and steer smoothly through the left curve.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Road curves to the right ahead.
What to do: Slow down and steer smoothly through the right curve.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Deer may cross the road in this area.
What to do: Slow down and watch for deer, especially at dawn or dusk.
Shape: diamond · Color: yellow

Road ahead splits into a divided highway with a median.
What to do: Keep right of the median and stay alert for the lane split ahead.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Divided highway ahead merges back into a two-way road.
What to do: Move back toward the right and be ready to meet oncoming traffic.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Horseback riders may cross or use the road ahead.
What to do: Slow down and pass horseback riders carefully and widely.
Shape: diamond · Color: yellow
Handbook p. 45 ↗
Slow-moving farm machinery may be on the road.
What to do: Slow down and pass farm equipment carefully when safe.
Shape: diamond · Color: yellow
Handbook p. 45 ↗
Warns that the road ahead may flood; do not drive into flood water.
What to do: Turn around and take another route if the road is flooded.
Shape: rectangle vertical · Color: orange

Slow, horse-drawn vehicles may be on the road.
What to do: Slow down and pass horse-drawn vehicles carefully and widely.
Shape: diamond · Color: yellow
Handbook p. 45 ↗
The left lane ends ahead and traffic must merge.
What to do: Merge right safely before your lane ends.
Shape: diamond · Color: yellow

A lane from the side joins your road ahead.
What to do: Adjust speed and merge safely; yield to traffic already in your lane.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Pedestrians may be crossing the road ahead.
What to do: Slow down and yield to any pedestrians in or near the crosswalk.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
A playground area is near the road ahead.
What to do: Slow down and watch for children playing near the road.
Shape: diamond · Color: yellow
Handbook p. 43 ↗
Road curves right then left ahead.
What to do: Slow down and steer carefully through both curves.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
The road becomes narrower ahead.
What to do: Slow down and stay centered in your lane as the road narrows.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
A roundabout is ahead where traffic circles counterclockwise.
What to do: Slow down and yield to traffic already in the roundabout.
Shape: diamond · Color: yellow

Bicyclists may be sharing the road ahead.
What to do: Watch for bicyclists and give them room when passing.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
A side road joins the highway from the right ahead.
What to do: Watch for vehicles entering from the side road on the right.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
A traffic signal is ahead at the intersection.
What to do: Slow down and be ready to stop for the signal.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Road may be slick from rain, ice or oil.
What to do: Slow down, avoid sudden braking or sharp turns, and increase following distance.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
Marks a vehicle that travels much slower than normal traffic.
What to do: Slow down early and pass only when it is safe to do so.
Shape: triangle · Color: orange
Handbook p. 45 ↗
Warns that a stop sign is ahead.
What to do: Begin slowing down and prepare to stop at the upcoming stop sign.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
The road ahead ends in a T-shaped intersection.
What to do: Slow down and prepare to turn left or right.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
The road has several curves ahead.
What to do: Slow down and drive carefully through the series of curves.
Shape: diamond · Color: yellow

The road ahead forks into a Y-shaped intersection.
What to do: Slow down and choose the correct branch of the fork.
Shape: diamond · Color: yellow
Handbook p. 28 ↗
You are approaching a school area or crossing.
What to do: Slow down, watch for children, and be ready to stop.
Shape: pentagon · Color: yellow
Handbook p. 28 ↗
Warns that a railroad crossing is ahead.
What to do: Slow down, look and listen for a train.
Shape: circle · Color: yellow
Handbook p. 29 ↗
A worker will direct traffic ahead.
What to do: Slow down and be ready to stop or follow the flagger's directions.
Shape: diamond · Color: orange
Handbook p. 30 ↗
Warns the road narrows to a single lane ahead.
What to do: Slow down and be prepared to merge or take turns.
Shape: diamond · Color: orange
Handbook p. 30 ↗
Warns of road construction a set distance ahead.
What to do: Slow down and watch for workers and equipment.
Shape: diamond · Color: orange
Handbook p. 30 ↗
Construction or maintenance work is ahead on the road.
What to do: Slow down and watch for workers, equipment and lane changes.
Shape: diamond · Color: orange
Handbook p. 48 ↗
Road workers are working near or in the roadway.
What to do: Slow down and watch for workers and equipment.
Shape: diamond · Color: orange
Handbook p. 30 ↗
Marks a designated route for bicycle travel.
What to do: Watch for bicyclists along the marked route.
Shape: rectangle vertical · Color: green
Handbook p. 29 ↗
Identifies a numbered state highway route.
What to do: Use the marker to confirm which route you are on.
Shape: shield · Color: white
Handbook p. 29 ↗
Marks a numbered U.S. highway route.
What to do: Use this marker to confirm you are on or to find the numbered US route.
Shape: shield · Color: white
Handbook p. 29 ↗
Marks a facility or space accessible to people with disabilities.
What to do: Use as directed; reserve marked accessible spaces for permit holders.
Shape: square · Color: blue

Directs drivers to a nearby hospital.
What to do: Follow the arrow if you need emergency medical services.
Shape: rectangle vertical · Color: blue
Handbook p. 29 ↗
Shows nearby services such as fuel, food and lodging.
What to do: Use the sign to plan a stop for services.
Shape: rectangle horizontal · Color: blue
Handbook p. 29 ↗
Points the way to a state park or recreation area.
What to do: Follow the arrow if you want to reach the park.
Shape: rectangle horizontal · Color: brown
Handbook p. 29 ↗
A shared center lane for left turns from either direction.
What to do: Use this lane only to turn left or wait to turn; do not drive through it.
Shape: n/a · Color: n/a