road side interview method

license plate method

return postcard method

home interview method

spot maps

pie charts

condition diagram

collision diagram

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