How to Make Room for a Merging Vehicle Courteously
Last reviewed: 2026 · Driviology Road Safety Education Team
Quick Answer
Drivers already on the highway can help a merging vehicle by adjusting speed slightly or moving over a lane where safe, rather than matching the merging vehicle's speed exactly and blocking the gap.
Merging is often discussed from the perspective of the vehicle joining the highway, but drivers already on the highway play just as important a role.
A Small Speed Adjustment Helps
Slightly easing off the accelerator to open a gap for a merging vehicle, complementing the habits covered in our guide to merging tips, costs almost nothing in travel time.
Moving Over When Safe
Where an adjacent lane is clear, moving over gives a merging vehicle a straightforward, unobstructed path rather than forcing a tight squeeze.
Why This Is Part of Cooperative Driving
Making room for a merging vehicle is a small, low-cost example of the broader idea behind cooperative driving, benefiting overall traffic flow more than it costs any individual driver.