Cool idea and execution, but unfortunately I had such performance issues on Windows 10 to make the game almost unplayable! :(
I don’t know if it was a problem on my end or some driver incompatibility, but the game run really slowly; I managed to finish it nonetheless, and I must say that some of the levels are really interesting and entertaining even at 0.3x speed! ^-^’
The visuals are cute and pleasing, but the absence of music is really a bummer: an kind of upbeat tune would have fit your game so well. I will also say that clicking the traffic lights to switch their state can require too much precision, especially when you’re in a rush; also, maybe automating the fact that only one traffic light can be red by scripting so that if a new traffic light is clicked the currently red one turns to green might help people understand this mechanic immediately.
Another thing I noted is that sometimes the path the cars will take are not immediately clear, and this can be frustrating when turn unexpectedly: maybe it might be interesting highlighting them before the simulation starts to let the player plan a little; same goes for the relative speed of cars: notifying which car are faster and which are slower may be an additional aid to players to make confident decisions and avoiding just going trial-and-error.
Don’t get me wrong, your game was overall very fun to play: I just wanted to give you some suggestions for a possible post-jam version! Good job! ^-^