The control of the WS2812B RGB LED headlight modules is done with this script. Here the functions lights(x) for the low beam, highBeam(x) for the high beam, breakLight(x) for the brake light, reverseLight(x) for the reverse light and indicator(y) for the turn signal are available. X can take the values 0 and 1 (off & on). Y, i.e. the function of the indicators, can take over the values 0, 1, 2 and 3 (Off, Left, Right, hazard lights).

from microbit import *
import neopixel
from utime import ticks_ms, ticks_diff


np = neopixel.NeoPixel(pin0, 8)
headlights = (0, 3)
backlights = (5, 6)
led_white = (60, 60, 60)
led_red = (60, 0, 0)
led_off = (0, 0, 0)
led_red_br = (255, 0, 0)
led_orange = (100, 35, 0)
indicator_left = (1, 4)
indicator_right = (2, 7)
indicator_warning = (1, 2, 4, 7)


def lightsON():
    for x in headlights:
        np[x] = led_white
    for x in backlights:
        np[x] = led_red
    np.show()

def lightsOFF():
    for x in headlights:
        np[x] = led_off
    for x in backlights:
        np[x] = led_off
    np.show()

def lightsBreakON():
    temp = np[backlights[1]]
    for x in backlights:
        np[x] = led_red_br
    np.show()
    return (temp)

def lightsBreakOFF():
    for x in backlights:
        np[x] = led_off
    np.show()

def lightsBackON():
    temp = np[backlights[0]]
    np[backlights[0]] = led_white
    np.show()
    return (temp)

def lightsBackOFF():
    np[backlights[0]] = led_off
    np.show()

def lightsIndicator(direction, last_ind_act):
    if ticks_diff(ticks_ms(), last_ind_act) >= 400 and np[direction[0]] == led_off:
        for x in direction:
            np[x] = led_orange
        np.show()
        return ticks_ms()
    elif ticks_diff(ticks_ms(), last_ind_act) >= 400 and np[direction[0]] == led_orange:
        for x in direction:
            np[x] = led_off
        np.show()
        return ticks_ms()
    else:
        return last_ind_act

while True:
    # Application example
    lightsON()  #Light on
    sleep(1000)
    lightsBreakON()  #Brake light on
    sleep(1000)
    lightsBreakOFF()  #Brake light off
    sleep(1000)
    lightsBackON()  #Reversing lights on
    sleep(1000)
    lightsBackOFF()  #Reversing lights off
    sleep(1000)
    lightsOFF()  #Light off
    sleep(1000)