Find the critical ratio for left turn single lane group 400 veh/h in signalized intersection if the saturation flow rate 2000 veh/h a. 5.0 O b. Non. O c. 0.3 O d. 0.4
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A: given data flow density condition is given as Q=44D-0.6D2
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A: Speed = 75 mil/hrdecelerates = 7.4 ft/s2 (upto B) =3.7 ft/s2 (after B)
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A: The given data is: The cycle length=90 sec The effective green time=50 sec
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Q: 10. A lane on a freeway displays the following characteristics: (a) average headway between vehicles…
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Q: Studies have shown that the traffic flow on a single-lane approach to a signalized intersection can…
A: Solution Given Data Jam Density(kj) = 130 veh/min Space Mean Speed v= 40 mi/h Density when the red…
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A: Solution: When lane group delay is calculated, the value of "K" is taken as 0.5, for all the values…
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A: Given data: width = W = 22ft pcu factor = 1.12
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A: Solution: Given Data: q1=600 veh/hrq2=400 veh/hrs1=1800 veh/hrs2=1800 veh/hrLost time per phase=5.2…
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A: Given; q+60uln(u)=250u
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Q: 4) Traffic on the eastbound approach of a signalized intersection is traveling at 35 mi/hr, with a…
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Q: An approach at a signalized intersection with a 60-second cycle gets 30 seconds of displayed green…
A: The given data is shown below: Cycle time=60 sGreen time=30 sYellow time=4 sAll-red time=2…
Q: Studies have shown that the traffic flow on a single lane approach to a signalized intersection on…
A: Given data, Jam density Kj = 130 veh/mile Density K = 45 veh/mile Space mean speed V = 40 mph To…
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Q: Studies have shown that the traffic flow on a single-lane approach to a signalized intersection can…
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Q: highway. If the average time headway is 4 sec., determine the density of flow (veh/km), flow
A: Given data- No of vehicles (n) = 6 Length (L) = 200 m Time head way (t) = 4 sec
Q: PROBLEM 4. A signalized intersection has a 4-phase signal with the allowed movements shown in the…
A: Solution: Critical Flow Ratio: Phase 1: YEBleft=2451750 , YWBL=2301725YEBL=0.14 ,…
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Q: Recent computations at an approach to a pretimed-signalized intersection indicate that the…
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Q: (b) An approach to a pretimed signal has 25 seconds of effective green in a 60-second cycle. The…
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Q: The car is traveling at a speed of 77 mi/hr as it approaches point A. Beginning at A, the car…
A: Given car speed 77 mi/hr Car decelerate at a constant =7.1 ft/s2 Rate of decrease speed =2.3 ft/s2
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- On the 6% graded section of a highway, designed with a velocity of 90 km/h, traffic flow is allowed discontinously due to maintenance and repair works. The drivers have to be warned while approaching this section. Find the distance that traffic signs have to be placed on each side of the working area.Given: Pavement sliding coefficient, f=0,45 detection-reaction time, tr=0,75 snThe radius of a highway curve is 120m, and has an angle of 9.31° from the horizontal. The center of gravity of the car is located 0.80m above the roadway and the distance between the two front wheels is 1.2m. If the car has a total weight of 15KN, a. Determine the normal acceleration and the velocity (in kph) of the car before overturning? b. Find the maximum velocity of the car could move along the curve so that there will be no outstanding pressure between the tires and the roadway. c. If the coefficient of kinetic friction is 0.60, what is the maximum velocity (in kph) of the car without sliding?Andoks highway can accommodate speed of 80 kph under free-flowing conditions. On average, front bumper-to-bumper spacing of 1.58m is occuring on the highway such that the flow stops completely. Determine the flow of traffic on Andoks Highway if the average speed of the vehicles is 28 kph.
- A two-lane minor road intersects with a four-lane major street at 90 deg, forming a 4-leg intersection with traffic on the minor road controlled by a stop sign. The speed limits were 45 mph on the major road, and 25 mph on the minor road. Determine the intersection sight distance (ISD) when a passenger car wants to make a left turn onto the major street. (The grades of both road are low than 3%)The spacing of the cars moving along the same lane of an expressway is 40 m center to center. If the average velocity of the car is 60 kph, determine the volume of traffic in veh/hr.Because of a visible obstruction along a horizontal curve drivers can only see a stop sign until they are at 250 feet upstream of the sign. Can vehicle stop before the stop line if the perception reaction time is 2.5 seconds and deceleration rate is 11.2 ft./s^2 what should be a reasonable posted speed limit
- A delivery truck passes thru the expressway exit ramps at a design velocity of 50 kph. connects with a local road to allow ram traffic to turn right without stopping at an acceleration of 1.57 m/sq.s. The turning roadway has stabilized shoulders on both sides and provides for a one-lane one-way operation with no provisions for a passing stalled vehicle. Super elevation on the turning roadway is 0.08. Determine the minimum radius of curvature for the ramp in meters.One segment of a Class I two-lane highway is on rolling terrain and has an hourly volume of 950 veh/h (total for both directions), a directional traffic split of 70/30, and PHF = 0.85, and the traffic stream contains 6% large trucks, 3% buses, and 6% recreational vehicles.Determine the ideal velocity of a car that could pass round a 5° curve if the impact factor is 0.14. Neglect friction. a. 48.51 kphb. 35.62 kphc. 63.87 kphd. 86.51 kph
- If 5473 vehicles passes a certain lane of road with an average speed of 60kph. determine the appropriate spacing of the vehicles.Drivers must slowdown from 65mi/h to 45mi/h to negotiate a severe curve on a rural highway. A warning sign for the curve is clearly visible for a distance of 150 ft. How far in advance of the curve must the sign be located to ensure that vehicles have sufficient distance to decelerate safely? Use the standard reaction time 2.5 s and deceleration rate 11.2 ft/s recommended by AASHTOA traffic stream in a particular direction ofa two lane road is moving with a constantspeed of 50 kmph, with an average headway of 2.52 seconds. Find the longitudinal distance between two consecutive vehicles.