1 Toucan Crossing

Jasper Day S2265891

Goal: Write a python program which uses a blinkstick to simulate the TOUCAN pedestrian crossing at the corner of Mayfeild Road and West Mains Road

Code

import blinkstick
import matplotlib as mpt
import numpy as np
from enum import Enum
import time

2 Traffic Light Table

Period	Use	Signal for Pedestrians	Signal for Vehicles	Timing	Variation
I	Vehicle Running	Red	Green	20 - 60 (ends at either max time or on pedestrian demand + gap. Vehicle actuation cancels gap for 6 sec)	Traffic volume
II	Amber to Vehicles	Red	Amber	3	n/a
III	Vehicle Clearance	Red	Red	1 (gap in vehicles) - 3 (vehicle present)	Vehicle actuation
IV	Pedestrian Crossing	Green	Red	4 - 7	Check maps
V	Pedestrians keep crossing	Black	Red	3	n/a
VI	Pedestrian clearance	Black	Red	0 - 22 (pedestrian detection adds 2 sec)	Pedestrian actuation
VII	Additional Pedestrian Crossing	Black	Red	0 - 3	Pedestrian detection
VIII	All red	Red	Red	1 - 3	Free choice
IX	Red / Amber to Vehicles	Red	Red/Amber	2	NA

Code

class Period(int, Enum):
    # Enum type allows state comparison of our traffic light variable.
    # `int` enum lets us augment state by addition operator +=
    I = 1
    II = 2
    III = 3
    IV = 4
    V = 5
    VI = 6
    VII = 7
    VIII = 8
    IX = 9

# class TrafficLight():
#     # container class for our state
#     def __init__(self):
#         self.state = TrafficLightState.I

# Size of the crosswalk simulation matrix. One square is 1 meter on a side.
ROWS = 70
COLUMNS = 30
TIME = 0 # seconds

class Scene():
    scene = np.zeros([ROWS, COLUMNS])
    state = Period.I            # global traffic light state
    def simulation_step(self):  # advance simulation
        TIME += 1
        time.sleep(1)

class TrafficLight(Scene):
    pass

class SceneObject(Scene):
    def __init__(self, row_start, row_end, col_start, col_end):
        if not (row_start < row_end < super().scene.shape[0] and col_start < col_end < super().scene.shape[1]):
            # Check if bounds are valid
            raise Exception("Incorrect bounds for object") 
        self.row_start = row_start
        self.row_end = row_end
        self.col_start = col_start
        self.col_end = col_end

class Pedestrians(SceneObject):
    pass

class Car(SceneObject): # Contents of Address Register. just kidding.
    pass

window = Scene()

pedestriandetector = SceneObject(35,50,7,17)

print(f"window state {window.state}")
print(pedestriandetector.state)

window state 1
Period.I