You control the traffic signals. Tap an intersection to switch its lights
between the two directions. Cars never crash — your job is to keep them moving and
avoid gridlock. Reach each level’s target score before the timer ends to clear it.
Two and three stars also need short waits: keep the average wait under the
level’s target, and don’t leave any car stuck at a red for too long.
Frequently asked
I bought “Remove Ads” but still see ads. Open
Settings in the app and tap Restore Purchases. Make sure
you’re signed in with the Apple ID used for the purchase.
How do I change ad tracking? Go to
Settings → Privacy & Security → Tracking on your device.
My scores aren’t on the leaderboard. Sign in to Game Center
in your device settings, then reopen the app.
Why don’t my lights turn yellow? New players start with
Instant light switch on, so a tapped light changes at once. For realistic
yellow lights, turn it off in Settings. With yellow lights, a tap while a
light is still changing is ignored; turn on the Light-change timer to see
each change count down. You can also turn the stop-line light bars on or off.
What is AUTO mode? Long-press an intersection to let the
game run that signal for you. It unlocks after you clear level 10. Keep running
your own lights too: if drivers wait at them while you stop tapping, AUTO hands
its lights back (you get a warning first).
I’m stuck on a level. After three tries you can skip ahead;
the level stays open to clear later.
How do I change ad consent? In the EEA/UK, open
Settings → Privacy choices in the app.
I lost my progress. Progress is saved on your device. It’s
removed if you delete the app or reset the device.
Accessibility
Settings include a colorblind signal palette and a “reduce flashing &
motion” option. The app supports VoiceOver — every traffic light on the map can be
read and switched — and Dynamic Type.