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- 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 crahsedA construction zone on a highway has a posted speed of 40 kmph. The speeds of vehicles passing through this construction zone are normally distrbuted with a mean of 45 kmph and a standard deviation of 4 kmph. a.) What is the probability that a vehicle passing through the construction zone exceeds the posted limit? b.) What is the probability that a vehicle passing through the construction zone is travelling at speeds between 38 and 49 kmph? c,) For the next 30,000 vehicles passing through the construction zone, how many will be passing through the zone with speed less then 50 kmph?Situation III: The table below shows the reported accidents for 1 10-mile highway section of the Macapagal boulevard. Year Ave. daily Traffic 20,500 22,000 23,500 24,000 25,500 7. Compute for the severity ratio Property damage 165 Injury Accidents Fatal Accidents 2000 40 2001 150 45 2002 170 170 50 10 2003 45 2004 160 60 19 8. Compute for the accident rate for injury accidents in HMVM 9. Compute the accident rate in HMVM O69
- Data on a traffic accident recorded on a certain intersection for the past 7 years has an accident rate of 4288 per million entering vehicles (ARMV). If the average daily traffic entering the intersection is 492, find the total number of accidents during the 7-year period a.5390 b.5388 c.5391 d.5389Q1 (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 20Data on a traffic accident recorded for the past 5 years on a certain stretch of a two-lane highway is tabulated as follows. Determine the severity ratio. Property Damage 116 212 Year Injury Fatal 2014 2015 2016 23 54 2 188 61 2017 212 77 8 2018 185 72 10 0.259 0.474 0.754 0.573
- 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 1Problem 2 The table shows reported accidents for a 10-mile highway section of the Diosdado Macapagal Boulevard. Property Damage Year 2000 2001 2002 2003 2004 Average Daily Traffic 20,500 22,000 23,500 24,000 25,500 165 150 170 170 160 Injury Accidents 40 45 50 45 60 a) Compute the severity ratio. b) Compute the accident rate for injury accidents in HMVM. c) Compute the accident rate in HMVM. Fatal Accidents 5 5 10 16 19According to accident statistics over the last three years, the five intersections having the highest number of accidents are shown in the corresponding table. The total entering traffic for each intersection is also shown. Intersection No. of Accidents Daily Entering Vehicles No. 1 243 15,900 200 18,300 3 310 24,000 4 180 13,600 239 14,200 1. Determine the mean accident rate of these intersections per million entering vehicles. Answer in two decimal places. 2. Can we flagged intersection 1 as hazardous, using 95 percent level of confidence and using classic statistical method? Answer either Yes or No. 3. Can we flagged intersection 3 as hazardous, using 95 percent level of confidence and using classic statistical method? Answer either Yes or No. 4. Can we flagged intersection 5 as hazardous, using 95 percent level of confidence and using classic statistical method? Answer either Yes or No.
- TRAVEL TIME AND DELAY STUDIES • The 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 Run Direction/ Number Northward 2 4 5 6 7 8 9 10 Southward 3 4 6 7 8 9 10 No. of Vehicles Travel Traveling in Time Opposite Direction (min) 5.25 5.08 5.30 5.15 5.00 5.51 5.38 5.41 5.12 5.31 4.95 4.85 5.00 4.91 4.63 5.11 4.83 4.91 4.95 4.83 100 105 103 110 101 98 97 112 109 107 85 88 95 100 102 90 95 96 98 90 PARKING STUDIES No. of Vehicles That Overtook Test Vehicle 3 1 0 1 3 0 1 0 0 2 1 1 No. of Vehicles Overtaken by Test Vehicle 2 1 1 0 3 1 0 1 2 PROB 1. Data collected at a parking lot indicate that a total of 300 cars park between 8 a.m. and 6 p.m. 10% of these cars are parked for an average of 2 hr, 30% for an average of 4 hr, and the remaining cars are parked for an average of 10 hr. Determine the space-hours of demand at the lot PROB 2. If 10% of…EXAMPLE 4: A 20-mile section of the Cavite Coastal Road had the following reported accidents including property damage only accidents (PDO). It is required to compute the accident rates for injury accidents for a period of 5 years from 1980. (Ans. 69.70) YEAR 1980 1981 1982 1983 1984 FATAL ACCIDENT 3 1 5 8 7 INJURY PROPERTY ACCIDENT DAMAGE 40 52 60 74 96 110 215 170 250 160 AVERAGE DAILY TRAFFIC 12,000 12,500 16,000 13,500 14,000Can someone please show me how to solve this step by step. Thank you Suppose you are hired by the UHM Transportation and Traffic Lab (TTL) to analyze vehicle arrivals at one lane of the interchange bridge connecting I-25 and I-40 for the period from 12:00am to 4:00am in a weekday. It is known that vehicle arrivals follow a Poisson process at this location. There is a single-loop detector embedded on this lane at the end of the interchange bridge. Since you do not want to go to the bridge to count vehicles at this time period, you decided to use the loop detector data for the analysis. Of the 720 20-second intervals (the loop detection system stores data every 20 seconds), 508 intervals were identified to have at least one vehicle detected. Assume the loop detector is free of error. Please estimate the vehicle arrival rate (vehicles per second) for this lane. With the estimated arrival rate, please calculate the probability of having three or more vehicles detected in a 20-second…