count period.n,5,A 24-hour count using a road tube at a rural highwaylocation produces a count of I1,250 actuations. A repre-sentative sample count to classify vehicles resulted inthe data shown here:enData for Problem 2Number of Axles Per VehicleNumber Observed1575550338.---«n 1EK 8 TRAFFIC DATA CBased on this sample classification count, howmany vehicles were observed during the 24-hourstudy?2344 6

Calculate the average number of vehicles during 24-hr study as; The 24-hr count at a rural highway…

2. A 24-hour count using a road tube at a rural highway location produces a count of I1,250 actuations. A repre- sentative sample count to classify vehicles resulted in the data shown here: Data for Problem 2 Number of Axes Per Vehicle Number Observed 157 55 50 33 8 3 4 IEK 8 TRAFFIC D Based on this sample classification count, how many vehicles were observed during the 24-hour study?

2. A 24-hour count using a road tube at a rural highway location produces a count of I1,250 actuations. A repre- sentative sample count to classify vehicles resulted in the data shown here: Data for Problem 2 Number of Axes Per Vehicle Number Observed 157 55 50 33 8 3 4 IEK 8 TRAFFIC D Based on this sample classification count, how many vehicles were observed during the 24-hour study?

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter6: Fundamental Principles Of Traffic Flow

Section: Chapter Questions

Problem 23P

See similar textbooks

Similar questions

count peiod. n, 5, A 24-hour count using a road tube at a rural highway location produces a count of I1,250 actuations. A repre- sentative sample count to classify vehicles resulted in the data shown here: 2. en Data for Problem 2 Number of Axles Per Vehicle Number Observed 157 55 50 33 8. ---n 1EK 8 TRAFFIC DATA C Based on this sample classification count, how many vehicles were observed during the 24-hour study? 2344 6
Given Length of segment highway = 0.3 miles AADT = 1600 vehicles / day Test factor = 1.96 for 95% confidence level For a 4 year period: Average crash rate per million entering vehicles. Property damage = 250 Fatal (Death) = 120 Calculate the critical crash rate. 730 crashes O 973 crashes O 937 crashes O 708 crahsed
4-14 Table 4.10 shows data obtained in a travel time study on a section of highway using the moving-vehicle technique. Estimate (a) the travel time and (b) the volume in each direction at this section of the highway. Chapter 4 Traffic Engineering Studies 149 Table 4.10 Travel Time Data for Problem 4-14 No. of No. of No. of Vehicles Vehicles That Vehicles Run Travel Traveling in Орposite Overtook Overtaken by Test Vehicle Direction/ Time Test Number (min) Direction Vehicle Northward 5.25 100 2 2 2 5.08 105 2 1 3 5.30 103 3 1 4 5.15 110 1 5.00 101 6. 5.51 98 7 5.38 97 1 1 8 5.41 112 2 3 5.12 109 3 1 10 5.31 107 Southward 1 4.95 85 1 2 4.85 88 1 3 5.00 95 1 4 4.91 100 2 1 4.63 102 1 5.11 90 1 1 7 4.83 95 8 4.91 96 3 1 9 4.95 98 1 2 10 4.83 90 1
A traffic engineer, wishing to determine a representative value of ADT on 250 highway links having similar volume characteristics, conducted a preliminary study from which the following estimates were made: mean volume= 45750 veh/day, standard deviation= 3750 veh/day. Determine the minimum number of stations for which the engineer should obtain 24-hour volume counts for a 95-t precision level. Use an allowable range error of 10%.
Determine the density (in veh/mi) of a traffic stream comprised mainly of passenger cars, for which a 6-ft long detector measured an occupancy of 17%. Assume an average vehicle length of 18 ft. A. 37.4 B 41.3 C 49.9 D Insufficient information is provided. E None of the above
A driver hit a pedestrian resulting in minor injuries. He was claiming that he followed the posted design speed at 80 kph (running speed=68 kph) and thought the design speed was not correct. Investigate the engineer's claim. (Prove by computation) a.) Was the driver's claim correct? b.) If yes, what should be the posted design speed? If not, what might be the other reasons for the pedestrian accident? Accident Report: - Driver was able to see the pedestrian 80 m ahead - Coefficient of friction = 0.4 Grade of the highway is zero - Time of accident: 8 AM - Weather condition: Fair - skid marks were not clear
Question 2: Speed observations from a radar speed meter have been taken, giving the speeds of the subsidiary streams composing the flow along with the volume of traffic of each subsidiary stream. The readings are as under: Calculate: (i) Time-mean speed (ii)Space-mean speed (iii) Variance about space mean speed. Is pitn 50 puns on s pese sped Speed Volume of subsidiary mmidel spued (km hr) stream (Vehicle hour) 2-5 6-9 4 10-13 14-17 18-21 20 2-5 22-25 44 26-29 80 30-33 82 34-37 79 38-41 49 42-45 36 46-49 26 50-53 6. 54-57 10 58-61
5- Traffic volume study was conducted in a section of road in month of April the following information's was obtained ( HEF=18, POV =650 veh/h, total weekly volume =72450 veh/week, total yearly volume = 23770 veh lyear, MEF =1/2 DEF). So, the ADT of this month? (Assume total daily volume = average daily volume) * O 7923 veh 850 veh 660 veh O 1240 veh
A driver hit a pedestrian resulting in minor injuries. He was claiming that he followed the posted design speed at 80 kph (running speed368 kph) and perceived the design speed wasn't correct. Investigate the engineer's claim. (Prove by computation) a.) Was the driver's claim correct? b.) If yes, what should be the posted design speed? If not, what might be the other reasons for the pedestrian accident? Accident Report: - Driver was able to see the pedestrian 80 m ahead - Coefficient of friction 0.4 - Grade of the highway is zero - Time of accident: 8 AM - Weather condition: Fair - skid marks were not clear
Q1) Choose the correct answer.. 1-The first stage in traffic engineering studies is.. A. Traffic volume studies B. Spot speed studies C. Speed and delay studies D. Origin and destination studies 2.For the movement of vehicles at an intersection of two roads, without any interference, the type of grade separator generally preferred to, is A. Partial Cloverleaf B. Trumpet C. Diamond Interchange D. Full Cloverleaf 3. Pick up the incorrect statement from the following.. A. The speed on urban roads 120-130 km/hr. B. There is no control on the urban roads Access. C. The urban roads are use for long distance. D. Level of service for urban roads A and B. 4. The main objective of traffic volume studies.. A. To decide priority for improvement of roads. B. For geometric design. C. For computing roadway capacity. D. To plan traffic operation. 5. The minimum space headway increases with A. Increase in length of vehicle. B. Increase in width of vehicle. C. Increase in weight of vehicle. D. Increase…
Q3. The below Table shows the time and distance for 10 vehicles recorded during a traffic survey. Choose the correct answer of the following (Four only): 1. The Average Spot Speed of the sample in the Table equals: a. (68.5) Km/hr c. (19.21) Km/hr e. (18.9) Km/hr (20 Marks Time (sec) 5.0 Distance (m) b. (190.21) Km/hr d. (67.9) Km/hr f. None of them Distance/time (m/sec) 20.00 100 5.6 100 17.86 5.6 100 17.86 4.8 100 20.83 2. The Time Mean Speed (TMS) of the sample in the Table equals: a. 68.5 (Km/hr) c. 19.21 (Km/hr) e. 18.9 (Km/hr) 6.1 100 16.39 5.3 100 18.87 b. 190.21 (Km/hr) d. 67.9 (Km/hr)- f. None of them 5.9 100 16.95 5.2 100 19.23 4.5 100 22.22 5.0 100 20.00 3. The Space Mean Speed (SMS) of the sample in the Table equals: a. 68.5 (Km/hr) d. 67.9 (Km/hr) Total 53 1000 190.21 b. 190.21 (Km/hr) e. 18.9 (Km/hr) c. 19.21 (Km/hr) f. None of them 4. The Average travel Speed of the sample in the Table equals: a. 68.5 (Km/hr) d. 67.9 (Km/hr) b. 190.21 (Km/hr) e. 18.9 (Km/hr) c. 19.21…
Q1 (a) i. 10,000 vehicle speed traffic data were collected during the weekday on route FT050 at Batu Pahat, Johor. Suggest how to quantify and describe the basic characteristic of this data. Then explain how the method you suggested can help others to understand the data. (4 marks) ii. Consider the following data from 11 truck speed data climbing a hilly road. Compute 5 (FIVE) basic statistics of the sample speed as following: Sample mean Median а. b. с. Variance d. Range Standard error of the mean е. Speed (km/h) 25 Truck 1 2 35 3 55 4 15 40 6. 25 7 55 8. 35 9. 45 10 11 20