Interesting concept
I saw this a game like this before once, but yours is much better in my opinion, I found yours quite enjoyable. The fairly simplistic design of the cars made it easy to keep track of them all, but they were detailed enough to look nice. I also liked how you had the motorcycles, buses, and trucks in addition to regular cars, it added some variety to the game. I did finally beat level 20, but level 15 was probably the hardest for me. One thing I didn't like was the music, it got really annoying and repetitive pretty quickly, I had to mute it about halfway though playing the game. Also, there were some levels where I didn't have to click a single light and I passed the level just by luck, even on some of the final ones. Overall it was really nice, your games are always really original.