Can you please elaborate the Synchronization code

[div-Ai]

Hi what is t can you please explain and also what is base timer and time limits I mean the [5,30] in the list what are these values. If you can please elaborate it helps a lot.
Synchronization logic:
f = open("out.txt", "r")
no_of_vehicles=[]
no_of_vehicles.append(int(f.readline()))
no_of_vehicles.append(int(f.readline()))
no_of_vehicles.append(int(f.readline()))
no_of_vehicles.append(int(f.readline()))
baseTimer = 120 # baseTimer = int(input("Enter the base timer value"))
timeLimits = [5, 30] # timeLimits = list(map(int,input("Enter the time limits ").split()))
print("Input no of vehicles : ", *no_of_vehicles)

t = [(i / sum(no_of_vehicles)) * baseTimer if timeLimits[0] < (i / sum(no_of_vehicles)) * baseTimer < timeLimits[1] else min(timeLimits, key=lambda x: abs(x - (i / sum(no_of_vehicles)) * baseTimer)) for i in no_of_vehicles]
print(t, sum(t))