Don't Crash - traffic control

This town is peaceful and wide rural town. People lives in this town, use car to work or shopping. By operating the signals, Let's pass through cars. Take care to car accident, congestion and time limit... * How to play * - Tap the signal to change signal "red"(stop) or "blue"(go). - When the remaining car number to zero, you can play the next stage. - When occurs accident or congestion, or lost remaining time, then game is end. Let's clear all the stages!