C# Code for making a traffic Light System ???

Question

Hello Everyone,

 

I am new to C# so am having trouble making a Traffic Lights System. I have used three timers and a button. When I press the button the RedTimer starts but the program just stops working after that, the red light remains lit and the other one's don't start( it does respond ) . This is the code for my three timers and each timer has an interval of 1000 ms. Can anyone tell me why this is happening ???

 

This is the code: 

private void buttonStart_Click(object sender, EventArgs e)
{
    timerRed.Start();
}
private void timerRed_Tick(object sender, EventArgs e)
{
    timerGreen.Stop(); redLight.FillColor = Color.Red; greenLight.FillColor = Color.Black; timerRed.Stop(); timerYellow.Start();
}
private void timerYellow_Tick(object sender, EventArgs e)
{
    timerRed.Stop(); yellowLight.FillColor = Color.Yellow; redLight.FillColor = Color.Black; timerYellow.Stop(); timerGreen.Start();
}
private void timerGreen_Tick(object sender, EventArgs e)
{
    timerGreen.Stop(); greenLight.FillColor = Color.Green; yellowLight.FillColor = Color.Black; timerGreen.Stop(); timerRed.Start();
}