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. O 730 crashes O 973 crashes O 937 crashes O 708 crahsed
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- 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 16-20 The table below gives data on accepted and rejected gaps of vehicles on the minor road of an unsignalized intersection. If the arrival of major road vehicles can be described by the Poisson distribution, and the peak hour volume is 1100 veh/h, deter- mine the expected number of accepted gaps that will be available for minor road vehi- cles during the peak hour. Number of Accepted Gaps >t Number of Gap (t) (s) Rejected Gaps >t 1.5 92 3 2.5 52 18 3.5 30 35 4.5 10 62 5.5 100Problem 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 19
- 1.A stretch of four-lane, two-way highway 6.0 km long has a traffic volume of 35,450 vehicles per day. If for the last three years, the total number of accidents recorded was 1,960, determine the accident rate per99 mvk. A__833.421 accidents per 99 mvk. B__833.142 accidents per 99 mvk. C__833.124 accidetns per 99 mvk. D__none of the above 2.A section of road has 65 accidents recorded in three years. For the same period, the estimated vehicle travel on the section was 26 mvk. Considering only those sections having the same characteristics as under study, the mean rate is 75 accidents per 100 mvk. Is the section hazardous with 99 percent level of confidence? A__YES B__NO C__UNDEFINE 3.The traffic accidents recorded from the past 3 years on a two-lane highway shows that there is a total of 545 property damage only, 135 for injury and 10 fatalities. Determine the severity ration of this data? A__22% B__20.104% C__21.014%…PLEASE WRITE THE SOLUTIONS A T-intersection has a total of 2,400 collision incidents over the last 5 years. Given that the annual daily traffic recorded for this period is 57,079. Determine the accident rate of the intersection per million entering vehicle? A__23.039 accidents per mev. B__23.309 accidents per mev. C__23.093 accidents per mev. D__23.390 accidents per mev. The design speed of a parabolic curve is 80 kph having a soil grade of g1 = 3% and g2 = -4% with Sp =550m. Determine the length of the curve? A__2112m B__2113.5m C__2113.510m D__2131.510m If a town has a total of 152,400 registered vehicles in 2016. Determine the rate of accident per 9,000registered vehicles if the number of accidents on the same is 356? A__21.024 accidents per 9,000 vehicles B__22.024 accidents per 9,000 vehicles C__20.024 accidents per 9,000 vehicles D__None of the aboveThe crash rate on a heavily traveled two-lane rural highway is abnormally high. Thecorridor is 14 miles long with an ADT of 34,000. An investigation has determined thathead-on collisions are most common with an RMVMT of 4.5 and are caused by vehicles attempting to pass. Determine an appropriate countermeasure and calculate theestimated yearly reduction in total crashes.
- 1 The estimated average cost of a single fatal accident. A__2.3 million B__55,000 C__353,000 D__23 million 2 Make a full stop before passing an intersections. A__TRUE B__FALSE 3 It measures the accident rate per 100k population. A__Accidents B__Accident rate per registered vehicles C__Accident rate per population D__All of the above 4 It measures the accident rate based on the total kilometers of travel. A__Accidents B__Accident rate per intersections C__Accident rate per road sections D__Sag Vertical Curve 5 It measures accident rate which considers traffic volume AADT. A__Accidents B__Accident rate per road sections C__Accident rate per intersections D__None of the above 6. From the year 2000 which location shows the highest rate or number of accidents involving fatalities? A__Intersection B__Bridge C__Roadway D__Shoulder E__Service Road 7 What is…5. The table below gives data on accepted and rejected gaps of vehicles on the minor road of an unsignalized intersection. If the arrival of major road vehicles can be described by the Poisson distribution, and the peak hour volume is 1100 veh/h, determine the expected number of accepted gaps that will be available for minor road vehicles during the peak hour. Number of Rejected Gaps > t Number of Accepted Gaps >t Gap (t) (s) 1.5 92 3 2.5 52 18 3.5 30 35 4.5 10 62 5.5 2 100A 15 mile section of Kapayapaan Road had the following reported accidents for 6 years from 1992. It is required to compute the accident rates of all accidents
- The number of crashes involving trucks (“truck crashes”) has continuously increased as thenumber of truck increases. To analyze the association of truck crash rates with the number oflanes, truck crash rates were compared between two-lane and multi-lane highways as shown inthe table below. Is the standard deviation of truck crash rates significantly higher for two-lanehighways than multi-lane highways?Note: Final answer should be either “The standard deviation of truck crash rates is significantlyhigher for two-lane than multi-lane highways” or “The standard deviation of truck crash rates isnot significantly higher for two-lane than multi-lane highways”.Truck crash rates (crashes/million vehicle-km)Site No. Two-lane highways Multi-lane highways12345670.2560.3420.8421.0210.3610.2620.8610.1880.3120.4210.2850.2250.183TRAVEL 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…For a specific rural road segment in northeast Colorado, the total number of crashes as well as the number of fatal crashes have been recorded. Using the data provided with a traffic analysis within two standard deviations (or 95% confidence interval), determine if this site should be flagged for further study. Data: Length of road segment = 2 mi. AADT = 11,350 veh/day Total number of injury crashes for past 5 years = 55 Total number of fatal crashes for past 5 years = 5 Total number of property-only crashes for past 5 years = 100 Average number of statewide injury crashes for rural roads over past 5 years = 1.30 per 106 VMT Average number of statewide fatal crashes for rural roads over past 5 years = 0.02 per 106 VMT Average number of statewide property only crashes for rural roads over past 5 years = .033 per 106 VMT Weighted average crash rate of injury crashes for rural Colorado roads = 3 Weighted average crash rate of fatal crashes for rural Colorado roads = 8 Weighted…