Four-phases signal with a cycle time of 80 sec, Inter Green = 4 sec/phase, lost time / phase = 2 sec. Saturation flow on all approaches are similar, but the maximum traffic flows on two of the phases are triple the maximum traffic flows on the remaining two approaches, what will be actual green time on each phase?
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- The equivalent hourly flow rate for an approach with 125 vehicles in the peak 15 minutes and PHF = 0.92 would be:An intersection of four phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in table pictute below. Calculate the sum of flow ratios for critical lane groups.A signalized intersection approach has two lanes with no exclusive left- or right-turning lanes. The approach has a 50-second green out of a 90-second cycle. The yellow plus all-red intervals for the phase total 4.0 s. If the start-up lost time is 2.0 s/phase, the clearance lost time is 1.5 s/phase, and the saturation headway is 2.25 s/veh under prevailing conditions, what is thecapacity of the intersection approach.
- Quest... In a three-phase signal system design for a four- leg intersection, the critical flow ratios for each phase are 0.18, 0.32, and 0.22. The total loss time in each of the phases is 2 s. As per Webster's formula, find the optimal cycle length.A) Calculated (not rounded) clearance interval for an intersection approach of 50 mph that needs to cross 45 ft of intersection width. B) If a roadway has an AADT of 25000 vehicles, of which 2000 occur during the peak hour, what is the k factor? C) The stopped time delay for an intersection approach is 34.5 seconds. The control delay is most likely D)An intersection approach has a capacity of 1600 vph. What is the likely queue at the end of an hour if the 15 minute vehicle arrivals are 350, 500, 300, and 500? E)A roadway has a measured flow of 2400 vphpl and SMS of 60 mph, what is the density and LOS?Please calculate the level of service and delay for the westbound left lane group, the westbound approach, and the whole intersection. I provided LOS chart for reference.
- An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in the table below. (1) Calculate the sum of the flow ratios for the critical lane groups. (2) calculate the minimum cycle length and the effective green time for each phase (balancing v/c for the critical lane groups). Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired.Subject: transportation engineering Read the question carefully and give me right solution according to the question. A signal has four phases, where the critical lane group flow ratios are 0.115, 0.204, 0.099, and 0.248. If the lost time per phase is 6 seconds and the critical intersection v/c ratio is 0.88, calculate the minimum cycle length and the phase effective green times such that the lane group v/c ratios are equal.TRANSPORTATION ENGINEERING-TRAFFIC SIGNALS" Recent analysis at an approach to pre-time signalized intersection indicate that the volume-to-capacity ratio (v/c) is 0.8, htat saturation flow rate (s) is 1600 vehicles/hour, and the effective green time is 50 seconds. If the average delay, assuming D/D/1 is 11.25 seconds per vehicle, determine the arrival flow rate (vehicles/hour) and the cycle length.
- A pretimed four-phase signal has critical lane group flow rates for the first three phases of 200, 187, and 210 veh/h (saturation flow rates are 1800 veh/h/ln for all phases). The lost time is known to be 4 seconds for each phase. Assuming Xi = 0.9. If the cycle length is 60 seconds, what is the estimated effective green time of the fourth phase?A signalized intersection approach has three lanes with no exclusive left or right turning lanes. The approach has a 40- second green out of a 75-second cycle. The yellow plus all-red intervals for phase total 4.0 seconds. If the start-up lost time is 2.3s/phase, the clearance lost time is 1.1s/phase, and thesaturation headway is 2.48 s/veh under prevailing conditions, a. Calculate the saturation flow rate (veh/hr and whole number) b. Calculate the effective green time (sec and in 1 decimal) c. what is the capacity of the intersection approach? (veh/h/In and 2 decimals)Determine whether a T intersection (one leg on the minor approach) with the hourly volume data satisfy MUTCD Warrant 3 (peak-hr vehicular volume) for signalization. All approaches have one lane entering the intersection. For the warrant that is met, explain how the warrant is met (rules applied, hours in which the volume criteria were met, etc.) and refer to necessary graphs and tables. The major street speed limit is 60 km/h, and the minor street speed limit is 40 km/h.