The following control counts were made at an urban count station to develop dail

Question

The following control counts were made at an urban count station to develop daily and monthly variation actors. Calibrate these factors given the data shown as follows. 2. 24- hour daily volume First Day of week week in month Monday Tuesday Wednesday Thursday Friday Saturday Sunday anuary 2,000 2,200 2,250 1,900 2,0802,110 1,700 1,850 1,900 October 2,100 2,2702,300 2,000 1800 1,500950 1,890 1,710 2,050,8001,5501,010 1,750 ,400890 1,580 ,150 800 Monthly Volume: Average 24 hr counts Third week in Month of nua February March April vehs 2,250 2,200 2,000 2,100 1,950 1,850 1,800 1,700 2,000 2,100 2,150 2,300 une ul August tember October November December

Explanation / Answer

Daily variation factors may be computed as:

DF = Vave/Vday

Where:Vave = average daily count for all days of the week, vehs

Vday = average daily count for each day of the week, vehs

Vave = Total vehicle in week/No. of days

Vave = 48490/7 = 6972

DF(january) = 6972/7700 = 0.9

Carrying out the analysis, we get following table:

Monthly adjustment factors are based upon the data in Table 9.19, and are computedusing the following equation:

MFi= AADT/ADTi

Where:MFi= monthly adjustment factor month i

AADT = average annual daily traffic , vehs/day(estimated as the average of 12 monthly ADTs)

ADTi= average daily traffic for month i, vehs/day

AADT = 741700/365 = 2032

Calculating MF in following table:

First Week in month of Day of the week Monday Tuesday Wednesday Thursday Friday Saturday Sunday Total January 2000 2200 2250 2000 1800 1500 950 12700 April 1900 2080 2110 1890 1750 1400 890 12020 July 1700 1850 1900 1710 1580 1150 800 10690 October 2100 2270 2300 2050 1800 1550 1010 13080 Total 7700 8400 8560 7650 6930 5600 3650 48490 Average 1925 2100 2140 1913 1733 1400 913 12123 DF 0.90 0.82 0.81 0.91 1.00 1.24 1.90

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.