Merge Sign
The merge sign is a diamond-shaped yellow warning sign with a black symbol showing two lanes coming together into one. It warns that traffic from another road or lane will be joining your road ahead, and you should be prepared to share the road. You'll see this sign on highway on-ramps, where lanes combine, and where two roads merge into one. When you see a merge sign, check your mirrors and blind spots, adjust your speed to create or find a safe gap in traffic, and be prepared to change lanes if necessary. If you're on the main road and traffic is merging in, move to the left lane if possible to make room, or adjust your speed to let merging vehicles in safely. If you're the one merging, match the speed of highway traffic before you reach the end of the merge lane — merging too slowly is just as dangerous as merging too fast. The zipper merge technique — where drivers take turns alternating — is the most efficient and safest way to merge, especially in heavy traffic.
Rules & What to Do
Check mirrors and blind spots. Adjust speed to create or find a safe gap. If merging onto a highway, match traffic speed before the merge lane ends. If on the main road, move over or adjust speed to let merging traffic in safely.
Penalties
Failing to merge properly or causing an accident during a merge can result in failure-to-yield citations with fines of $100-$250 and 2-3 points. Aggressive driving during merges may lead to additional charges.
For Commercial Drivers
Merging is one of the most critical maneuvers for CDL drivers. Large trucks need more space and time to merge safely. When merging onto a highway, use the full length of the acceleration lane to build speed — loaded trucks accelerate slowly. When on the highway and you see vehicles merging, move left if safe to do so, as trucks in the right lane are often a barrier for merging traffic.
Frequently Asked Questions
What does the merge sign mean?
The merge sign warns that two lanes or roads are about to combine into one. Be prepared to share the road with vehicles entering from another lane or ramp.
Who has the right of way when merging?
Generally, traffic already on the main road has the right of way. Merging traffic must yield and find a safe gap. However, drivers on the main road should also cooperate by adjusting speed or changing lanes when safe.
How do you merge onto a highway safely?
Use the acceleration lane to match highway speed. Check mirrors and blind spots. Find a safe gap in traffic. Signal and merge smoothly. Never stop at the end of a merge lane unless absolutely necessary.