From Wazeopedia

Junction Style Guide/Interchange

No change in size, 4 years ago
Collector/distributor lanes: Capitalization corrections for links
The two surface street segments (between the outer ramps and connected to the Single Point) and the 4 ramp segments connected to the single point should all be the same level, either one higher or one lower than the elevation of the freeway segments above/below the single point.
=== Collector/distributor lanes Distributor Lanes ===
These are lanes parallel to, but physically separated from, the lanes of a Freeway that serve to keep merging traffic out of the flow of through traffic on the mainline Freeway.