It would be nice to have a lobby, so before the first game I can wait and ensure all my friends are connected. And perhaps a countdown, like 3, 2, 1, ...

I'm not sure about the jumps to the next intersection to move. I expected to smash my keys to move. I'm not sure what is better. (Also, pack man style movement may be another option.)

Can you add an AI player to test the game. (I opened a windows in Chrome and another in Firefox.) The AI must be not to smart but not too stupid.