increases

decreases

first decreases and then increases after reaching a minimum value at optimum speed

first increases and then decreases after reaching a maximum value at optimum speed

basic capacity

theoretical capacity

possible capacity

practical capacity

2500 vehicles per day

2000 vehicles per hour

2500 vehicles per hour

1000 vehicles per hour

increases

decreases

first increases and then decreases after reaching a maximum value at optimum speed

first decreases and then increases after reaching a minimum value at optimum speed

1

2

0.5

10