Learn · 05
Multi-Lane
Reserved block space so latency-sensitive apps aren't crowded out by unrelated traffic.
Checked against official docs on 2026-10-29
StatusDevnet feature. The official docs describe Multi-Lane as specific to New L1, with no equivalent on BNB Smart Chain.
The problem it solves
When a chain gets busy, everyone competes for the same block space. A sudden rush of unrelated activity can push out the transactions that most need speed, like a trade or a liquidation.
How it works
- A lane is tied to a registered contract address.
- Each lane reserves a share of every block's gas. For example, a lane set to 1,500 basis points always has 15% of the block's capacity kept for it.
- Any transaction sent to that address uses the lane, whatever function it calls.
- Space a lane doesn't use flows back to the default lane, which everyone else shares.
Who decides which apps get a lane?
Lanes are recorded in a system contract called the LaneRegistry, and changes go through on-chain governance. Changes take effect after a short delay, not in the very next block.
What it does not guarantee
Confirmed by official docsMulti-Lane is a capacity guarantee, not an inclusion guarantee. Other traffic can never use a lane's reserved share, but no single transaction is promised a spot.
- Inside a lane, transactions are still ordered by fee priority, not first come, first served.
- Space is counted by the gas limit you declare, not the gas you actually use.
An everyday analogy
A bus lane on a busy road. Buses still queue behind each other, but regular traffic can't block the lane.