If you don't see the update in the store, then the update will come a little bit later for your region. Please try to update the game later.

If after some time you still can't update the game, do the following:

1. Go to Settings > Apps > Google Play Store > Storage and select Clear Data;
2. Restart your device;
3. Go to Play Store and download the latest game version;

If it doesn't help try to delete Google Play updates in Settings, restart your device, update Google Play and then update Road Trip.

To be able to delete Google Play updates, please do the following:

1. Tap Settings > Apps;
2. Ensure it says All Apps at the top. If not, Tap the drop-down menu and select All Apps;
3. Tap Google Play Store > Menu and then the 3-vertical-dot button on the top right corner;
4. Tap Uninstall Updates > OK. The only data being removed is the updates to Google Play Store.