What is the verified key order?

Pink opens first at about `40s`, blue follows near `60s`, and orange opens last near `140s`, exposing pale-cyan cars in the upper-right panel.

How much road space is available?

Twelve positions; `10/12` is already the practical pause point on the narrow bends.

Purple completes first, and the final blue traffic drains the counter to `0/12` before `Smooth!` and the level-completed card.

Car Sort level guide

expert 11 colors

Car Sort Level 518 threads side shelves and blue-, pink-, and orange-marked shutters through a twelve-space vertical S-road.

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Route the first yellow pair through the center into its right-side shelf.
Clear the accessible lower pink and green groups before purple.
Complete purple and red shelves below `10/12` occupancy.
Let the cleared upper-left pink group release the pink key into the upper-right pink lock around `40s`, then route that panel's reveal.
Finish cyan and patterned-green shelves before the upper bend.
Clear the left-center traffic that releases the blue key around `60s`; use it on the middle-left blue lock and route that panel's cars.
After the lower-right orange group releases the last key near `140s`, open the orange-marked upper-right panel and route its newly exposed pale-cyan pair.
Complete the broad burgundy, red, yellow, and pink lower shelves.
Route late green, patterned green, blue, and cyan one shelf at a time.
Complete the last purple receiver, then send the final blue traffic through the S-road to reach `0/12`.

Colors in this level:

Yellow, Pink, Green, Purple, Red, Blue, Pale-purple, Cyan, Patterned-green, Orange, Burgundy

Opening an upper key shutter while both central bends remain occupied.
Treating the colored key symbol as the hidden car color; the orange lock, for example, reveals pale cyan.
Releasing patterned green at `12/12` without an open matching shelf.

Board notes 5 details

Layout: Short colored shelves line both sides of two central bends; one blue-key shutter sits mid-left and pink/orange shutters occupy the upper right.
Goal: Complete open shelves, unlock all three marked panels, route their reveals, and empty the `12`-space S-road.
Opening: Send yellow first, then clear lower pink and green; the pink key reaches its upper-right lock at about `40s`, before blue and orange.
Danger Zone: A shutter reveal at `10/12` or `12/12` strands pale purple, orange, or cyan behind patterned-green or burgundy traffic in the bends.
Mechanics: The three keys resolve in the observed order pink at about `40s`, blue at about `60s`, and orange near `140s`; orange opens the upper-right panel and exposes pale-cyan cars.

What is the verified key order?
Pink opens first at about `40s`, blue follows near `60s`, and orange opens last near `140s`, exposing pale-cyan cars in the upper-right panel.
How much road space is available?
Twelve positions; `10/12` is already the practical pause point on the narrow bends.
Which colors close the level?
Purple completes first, and the final blue traffic drains the counter to `0/12` before `Smooth!` and the level-completed card.