CB Slang / Road lanes
Granny Lane in trucking
Plain-English explanation
Granny lane is CB slang for the right lane or slow lane on a highway. The term plays on the stereotype of a cautious, slower driver — the opposite of someone running in the hammer lane. In trucking CB use, granny lane refers to the rightmost travel lane, where trucks often spend most of their time on multiple-lane interstates. Most interstate trucking happens in the right lane by design and regulation. Many states restrict trucks over a certain weight to the right lane or prohibit them from the left lane outside of passing. Trucks that run steady in the right lane and use the hammer lane only for passing follow both the law and general highway courtesy in most jurisdictions. On a busy corridor, the granny lane can actually be slower than it sounds — if it is also the exit lane, trucks get mixed in with passenger vehicles pulling off, which creates natural bunching and slowdowns. The right lane at a busy interchange can have more stop-and-go movement than the left lanes despite theoretically being the "slow" lane. In CB communication, granny lane shows up in traffic reports and obstacle locations. "Alligator in the granny lane," "bear on the side in the granny lane," and "construction in the granny lane" are typical uses. The distinction from hammer lane matters because it tells following drivers which lane is affected.
CB slang is road shorthand. It can help with awareness, but dispatch notes, load paperwork, inspection records, and claims still need formal language.
Why it matters in trucking
Right lane versus left lane is a meaningful distinction when a CB report is about an obstacle, law enforcement position, or construction zone. Understanding that granny lane means right lane prevents wrong-lane positioning when approaching a reported problem.
The value is speed and shared awareness. The limit is that slang should never replace exact times, locations, document names, or safety-critical instructions.
Example in real use
A driver comes on CB: "Northbound 81, alligator in the granny lane at the 52, right on the fog line." Drivers know the debris is in the right lane and move left early to avoid it rather than swerving at the last moment.
Where you might hear it
Granny lane comes up when drivers describe the right or slower lane in traffic.
What to check first
- Translate it to right lane or slow lane.
- Clarify which right-side lane on wider highways.
- Attach the location if there is a hazard.
Common mistakes or confusion
- Thinking granny lane is always completely separate from truck traffic — on congested interstates, the right lane can be as busy as the left, just with different types of movement.
- Not specifying direction in a granny lane report — on a divided highway, granny lane northbound and granny lane southbound are different locations and matter to different drivers.
- Assuming obstacles in the granny lane do not affect the hammer lane — spilled loads and accidents in the right lane can force drivers to merge left quickly, creating congestion in both lanes.
Related terms
Related guides
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Sources and last updated
Last updated: 2026-05-10