Peak Hour Factor (PHF) is used to represent the proportion of peak sub-hourly traffic flow within the peak hour

Q. Peak Hour Factor (PHF) is used to represent the proportion of peak sub-hourly traffic flow within the peak hour. If 15-minute sub-hours are considered, the theoretically possible range of PHF will be

(A) 0 to 1.0                 (B) 0.25 to 0.75          (C) 0.25 to 1.0           (D) 0.5 to 1.0

Ans: 0.25 to 1.0