from time import sleep
sleep(0.1) # Wait for USB to become ready
print("Hello, Pi Pico!")

from machine import Pin
redCar = Pin(18, Pin.OUT)
yellowCar = Pin(17, Pin.OUT)
greenCar = Pin(16, Pin.OUT)
red = Pin(21, Pin.OUT)
green = Pin(20, Pin.OUT)
button = Pin(15,Pin.IN, Pin.PULL_DOWN)


while True:
    b_state = button.value()
    if b_state:
        redCar.on()
    else:
        red.on()
        green.off()
        redCar.off()
        greenCar.on()
        redCar.off()
        yellowCar.off()
        '''
    #red
    redCar.on()
    yellowCar.off()
    greenCar.off()
    red.off()
    green.on() 
    sleep(4)

    #yellow
    redCar.on()
    yellowCar.on()
    greenCar.off()
    red.off()
    green.off() 
    sleep(2.5)

    #green
    redCar.off()
    yellowCar.off()
    greenCar.on()
    red.on()
    green.off() 
    sleep(4)

    #green1
    redCar.off()
    yellowCar.off()
    greenCar.off()
    sleep(0.5)
    redCar.off()
    yellowCar.off()
    greenCar.on()
    sleep(0.5)
    redCar.off()
    yellowCar.off()
    greenCar.off()
    sleep(0.5)

    redCar.off()
    yellowCar.off()
    greenCar.on()
    sleep(0.5)
    redCar.off()
    yellowCar.off()
    greenCar.off()
    sleep(0.5)
    redCar.off()
    yellowCar.off()
    greenCar.on()
    sleep(0.5)
    redCar.off()
    yellowCar.off()
    greenCar.off()
    sleep(0.5)

    #yellow1
    redCar.off()
    yellowCar.on()
    greenCar.off()
    sleep(2.5)
'''