Intersection and Merging Lane Warning Signs

Core Concepts

Identify and understand signs that warn of upcoming crossroads, T-intersections, side roads, and situations where traffic lanes merge or end, requiring driver cooperation.

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Advance Warning for Traffic Controls
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Intersection and Merging Lane Warning Signs

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Yellow diamond-shaped warning sign displaying a black cross symbol, warning drivers that a four-way crossroad intersection is directly ahead.
What does this plus-shaped symbol indicate?
A four-way intersection (crossroad) is ahead. Be aware of traffic from the left and right that may be entering your path.
A yellow diamond warning sign featuring a bold black T-shape, indicating that the roadway terminates ahead at a T-intersection where drivers must turn left or right.
What does this T-shaped sign mean?
The road you are on ends ahead at a 'T-intersection.' You must turn either left or right after yielding to all cross traffic.
A yellow diamond-shaped warning sign displaying a bold black Y-shaped symbol, indicating an upcoming Y-intersection where the current roadway forks into two separate paths with no direct continuation straight ahead.
What does this 'Y-Intersection' sign indicate?
The road ahead splits into two different directions. Be prepared to choose your path and watch for other traffic. There is no 'straight through' option.
As a driver on the main road, who has the right-of-way in a merging situation?
Drivers on the main road have the right-of-way. Merging traffic must yield. However, safe and courteous driving involves helping others merge when you can.
How is an 'Added Lane' sign different from a 'Merging Traffic' sign?
An 'Added Lane' sign means a new lane is being created for entering traffic, so no merging is necessary. A 'Merging Traffic' sign means vehicles must squeeze into an existing lane.
A diamond-shaped yellow warning sign showing a straight left line and a right lane line tapering inward, indicating that the right lane ends ahead and traffic must merge left.
What does this 'Lane Ends' sign warn you about?
The lane you are in is ending soon. You must prepare to merge safely into the adjacent continuing lane.
Yellow diamond-shaped warning sign with two opposing curved arrows flanking a divider barrier at the top, warning that a divided highway begins ahead.
What change in the roadway does this sign indicate?
The road ahead will be split by a median or physical barrier. You must keep to the right of the divider.
Yellow diamond-shaped warning sign with three counterclockwise circular arrows, accompanied by supplementary plaques reading ROUNDABOUT and 20 M.P.H. It signals an upcoming circular intersection requiring drivers to yield and reduce speed.
What should you prepare for when you see this sign?
A roundabout (or traffic circle) is ahead. You must slow down, choose your lane, and yield to all traffic, including pedestrians and cyclists, already in the roundabout before entering.
Yellow diamond-shaped warning sign indicating an added lane or side road entering traffic from the right, creating a new lane alongside existing through traffic.
How should you react to this sign?
A side road enters the highway from the direction shown (in this case, the right). Be alert for vehicles entering your lane from that side road.
A yellow diamond-shaped road sign displaying a straight black arrow with an incoming curved merging lane from the right, warning drivers of upcoming merging traffic.
What action is required when you see this 'Merging Traffic' sign?
Traffic from a side ramp or lane will be merging into your lane. You should safely make space for the merging vehicle if possible by adjusting speed or changing lanes.
A diamond-shaped yellow warning sign featuring two opposing curved vertical arrows separated by a median symbol at the bottom, indicating that a divided highway is ending.
What hazard does the 'Divided Highway Ends' sign warn of?
The median or barrier is ending, and the road ahead will become a two-way roadway with oncoming traffic in the adjacent lane. Be prepared for this change.
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