This is an Endless game mode that should be extremely similar for you if you played the original Impossible Road. In Survival, the goal is just to stay on the track for as long as possible. You go through checkpoints and you try to get through as many as you can.
This was the only way to play the original game when it released all the way back in 2013. Big difference now is that there are different tracks to play on and you are able to customize your vessel which now has attributes compared to the old game.
What makes this mode great is that it plays a bit like a "free play" mode. So you can test out your "cheating" skills hopping from one part of the track to the other. It's also a great mode to test your vessel's attributes too while you try to shoot for a high score.
Another Endless mode, Time Gate is great for new Super Impossible Road players for a couple of reasons. For one; as with Survival, you're not playing against anyone else. It's just you, the track, and some goals you need to go through.
It'll test your speed since you're on a time limit and you need to get through the checkpoints to keep the clock going. For this mode, it's definitely good to customize your vessel to where it has good speed to zip around the track faster and get through those goals.
It doesn't feel as free as Survival because of the time, but it's an excellent way to work on your pacing while trying to stay balanced on the track.
Daily Track in Super Impossible Road is your chance to make some moves up the leaderboard. It operates essentially as Survival, but the difference is that the tracks vary. What makes this good is that it lets you familiarize yourself with random tracks.
Doing so will showcase your versatility. Some tracks offer tighter turns and sometimes even gaps for you to try and jump over if you can. Yes, you can also play the different tracks in a mode like Survival, but if you want unpredictability, then go for the Daily Track.
Not to mention that it's just fun to play. It's something that you would want to improve on each and every time you head out there. It's one of the first modes you'll spot when firing up the game so why not give it a whirl, huh?