What should I dispatch first on Level 28?

Start with the exposed yellow bus, use the next yellow group when it reaches the outlet, and then follow cyan.

Why can a matching color be unsafe?

A bus whose passenger group is still around the far side of the oval parks without clearing the current outlet and uses a holding-row bay.

Bus Fever Party level guide

hard 7 colors

Two yellow buses start the broad oval, then cyan. A bus can match a color on the far side of the oval and still collect nothing.

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Tap the first exposed yellow bus and let its boarding cycle create the first release.
Tap the next yellow bus when the following yellow band reaches the outlet; wait for a departure to recycle a regular bay.
Dispatch cyan once its side or lower band is exposed, then follow the red and brown bands appearing around the oval.
Use orange, pink, and blue only when their matching groups touch the outlet; leave far-side same-color buses in the queue.
Reuse each freed bay through the remaining cyan, yellow, red, brown, and orange groups as the route contracts.
Clear the final pink and blue and warm-color tail, then wait for the last departure.

Colors in this level:

Blue, Brown, Cyan, Orange, Pink, Red, Yellow

Choosing a same-color bus whose passenger group is still on the far side of the oval.
Filling regular bays with brown, red, or orange before the yellow and cyan opening has created space.

Choose the color currently touching the oval outlet, not merely a matching color elsewhere on the ring.
Use the two visible yellow openings before adding cyan.
Keep one regular bay free while the oval contracts through pink, blue, orange, and late yellow groups.

Board notes 5 details

Layout: A broad oval route has blue side arms and visible red, brown, orange, yellow, pink, and cyan passenger bands. The lower queue is a scattered field of horizontal and vertical buses.
Goal: Keep the current outlet supplied and use departures to reach the next exposed oval segment without filling every regular holding bay.
Opening: Dispatch the first yellow bus, use the next yellow group when it reaches the outlet, then send cyan before reaching into a deeper queue color.
Danger Zone: A bus can match a color visible on the far side of the oval yet park without clearing the outlet. That consumes a bay needed by the next yellow, cyan, or warm-color departure.
Mechanics: The route stays oval-shaped the whole time while its color order reshuffles, so the shape gives no hint about what comes next.

What should I dispatch first on Level 28?
Start with the exposed yellow bus, use the next yellow group when it reaches the outlet, and then follow cyan.
Why can a matching color be unsafe?
A bus whose passenger group is still around the far side of the oval parks without clearing the current outlet and uses a holding-row bay.