What is the safe opening for Level 22?

Use the red bus with 37, then the blue bus with 38, and wait for the next red opening.

When should I reach into the diagonal queue?

Wait until the first red and blue departure has freed a holding-row bay.

Bus Fever Party level guide

hard 7 colors

Red 37 and blue 38 are big loads for such a compact oval, so the first departure takes a while. Do not fill the wait with a deep queue bus.

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Tap the first red bus and let its visible 37 counter work through the large red lower-right loop.
Dispatch the blue bus with the visible 38 counter when the blue inner section opens, then allow the red and blue pair to create a departure.
Send the next red bus after the lower gap is exposed and recycle the released bay.
Follow the exposed green and yellow groups around the oval.
Continue through the orange and purple blocks as the loop changes color, keeping a regular bay available for each departure.
Clear the final cyan, blue, and remaining colored tail.

Colors in this level:

Blue, Cyan, Green, Orange, Purple, Red, Yellow

Selecting a deep queue bus while the first red and blue counters are still active.
Sending orange, purple, or cyan early, before the oval has rotated past the green and yellow blocks.

Start with the red and blue opening shown by the first two counters.
Wait for a white-trail departure before reaching into the deeper diagonal queue.
Follow the route's green and yellow rotation before committing to the orange, purple, and cyan tail.

Board notes 5 details

Layout: A horizontal oval starts with red across the lower and right ring, blue on both upper side arms and the first inner opening, and green waiting behind the left arm. The lower queue is a dense diagonal field of ordinary colored buses.
Goal: Clear the red and blue entrance first, then follow the route as it rotates through green, yellow, orange, purple, and cyan while preserving space for departures.
Opening: Dispatch the red bus showing 37, then the blue bus showing 38, followed by the next red opening. The row later shows blue 16, green 40, and other exposed counters as the oval changes.
Danger Zone: Filling the row with a deep queue bus before the first red and blue departure blocks the lower opening and stalls the green and yellow transition.
Mechanics: The oval's exposed segment changes after every matching dispatch, so the next useful color is always the one just past the last cleared block.

What is the safe opening for Level 22?
Use the red bus with 37, then the blue bus with 38, and wait for the next red opening.
When should I reach into the diagonal queue?
Wait until the first red and blue departure has freed a holding-row bay.