Are the 5, 1, 2, and 4 objects tappable queues?

No. Their glass-backed values fall through completed receiver groups.

Where is the main capacity risk?

Mixed traffic fills all sixteen spaces before the middle and late cyan and green completions.

Open left purple-front to reveal burgundy first, center green-front to form purple second, and right cyan-front to form blue last.

Car Sort level guide

expert 11 colors

Car Sort Level 528 layers four completion countdowns and three key-front towers across a sixteen-space three-bend S-road.

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Dispatch purple from the short upper tray and route early cyan, red, orange, and pink.
Use the left purple-front key tower first; its unlock exposes burgundy, which becomes the first middle receiver, while lower-left orange stabilizes the bend.
Complete the first green group to begin reducing the top-left `5` glass stage.
Advance the center green-front key tower next; after its lock opens, that column becomes the purple receiver while lower orange, lavender, red, and cyan and pink stages settle.
Above `12/16`, expose only one keyed or hidden layer before waiting for a receiver drain.
Advance the upper horizontal tray through green and white reveals into its solid pink receiver.
Use completions to lower the `5` and `4` stages through their later values while the separate `1` and `2` gates clear.
Open the right cyan-front key tower last; its late unlock converts that column into the blue receiver, then complete top green, yellow, and white while pausing again at `16/16`.
Finish lower lavender, red, and cyan, then route the last orange and green pairs.
Verify every receiver is checked and the occupancy display reaches `0/16` with `Well Done!` feedback and the completion card.

Colors in this level:

Purple, Cyan, Red, Orange, Pink, Burgundy, Green, Yellow, White, Blue, Lavender

Board notes 5 details

Layout: Four top towers, one short upper horizontal tray, three key-front middle towers, and four lower towers feed one `0/16` S-road with eleven tall groups plus one horizontal group.
Goal: Open the keyed middle bank, reduce glass stages marked `5/1/2/4`, and complete every top, middle, lower, and horizontal receiver.
Opening: Route upper-tray purple with exposed cyan, red, and orange so burgundy and orange receivers stabilize the first two bends.
Danger Zone: The road reaches `16/16` during both the mixed middle phase and late cyan/green phase; another reveal at that point blocks the S-road.
Mechanics: Four completion-driven glass counters coexist with purple, green, and cyan key-front towers and a multi-stage horizontal tray.

Are the 5, 1, 2, and 4 objects tappable queues?
No. Their glass-backed values fall through completed receiver groups.
Where is the main capacity risk?
Mixed traffic fills all sixteen spaces before the middle and late cyan and green completions.
What is the keyed-tower order?
Open left purple-front to reveal burgundy first, center green-front to form purple second, and right cyan-front to form blue last.