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- The stopping sight distance (SSD) for a level highway is 140 m for the design speed of 90 km/h. The acceleration due to gravity and deceleration rate are 9.81 m/s² and 3.5 m/s², respectively. The perception / reaction time (in s, round off to two decimal places) used in the SSD calculation isWhat is the intersection sight distance (m) needed at a stop controlled intersection for a passenger car to turn left onto a 2-way, 4-lane road with a design speed of 80 km/h? Assume the vehicle turns into the closest lane. [round to the nearest meter] Response Feedback: ISD=0.278V t major g Remember, tg is increased by 0.5 seconds for the additional lane.Question 21 Determine the impact factor for a highway curve having a radius of 2,174 ft and maximum design speed of 59 kph. Express your answer in 4 decimal places « A Moving to another question will save this response. acer F11 F12 PrtSc Pause Del Home F8 F9 F10 F4 F5 F6 F7 Scr Lk SysRq Break Ins & Backspac 5 € 6 8 9 J K L
- What is the brake reaction distance (ft) when the design speed is 55 mph, assuming the AASHTO recommended deceleration rate and perception-reaction time. Response Feedback: brake reaction distance = 1.47VtrA car is traveling on a -4.20% grade for a design speed of 90 kph. Coefficient of friction between tires and pavement is 0.33. Driver's reaction time (including perception time) is 2.50 seconds. Determine the following: a.) acceleration of the vehicle in ft/s2 , b.) Stopping sight distance in meters. SHOW COMPLETE SOLUTION UPVOTE GUARANTEED asap.The following speeds (75 80, 72, 77 - 79,87,69 and 65) in km/her were measured utes. The data. space mean for vehicle.com speed for This ·computes
- If the design speed is 80 kmph, perception reaction time 3 seconds and coefficient of friction 0.5, the safe stopping sight distance is.... 2 Marks] [1001TM Ford® Mustang Cobra time-to-speed data for a 1994 Ford Mustang Cobra accelerating from rest to 130 mph. How far had the Mustang traveled by the time it reached this speed? (Use trapezoids to estimate the area under the velocity curve, but be careful: The time intervals vary in length.) The accompanying table shows Speed change Time (sec) 2.2 Zero to 30 mph 40 mph 50 mph 60 mph 70 mph 80 mph 90 mph 100 mph 110 mph 120 mph 130 mph 3.2 4.5 5.9 7.8 10.2 12.7 16.0 20.6 26.2 37.1Aloha! This question I'm stuck on in my class. COuld you help? A driver traveling North on a two-lane two-way highway is performing apassing maneuver (i.e., using the opposing traffic lane) at a speed of v1 = 100 km/h on a sectionof the road with a grade G1 = 4%. Her perception-reaction time is tr1 = 1.0 s and her car canperform the stopping maneuver with a friction coefficient f1 = 0.35 (assuming, for example, worntires). The driver of another car traveling South at a speed v2 = 90 km/h has a perception-reactiontime tr2 = 1.3 s. Since the tires of this vehicle, which is traveling on a grade G2 = -4.0%, are ingood condition, they can develop a coefficient of friction f2 = 0.52. The two vehicles becomevisible to one another at the same time, when they are separated by a distance X = 200 m, measuredfrom front bumper to front bumper (See sketch below). Recall that g = 9.81 m/s2and that 3.6 km/h= 1 m/s.Assuming that the only alternative for the two drivers to avoid a collision is to…
- A road with 5.6% upward grade and speed 100kmph. If coefficient of longitudinal friction 0.33 and driver reaction time was 1.8sec, find the stopping sight distance available. A BI = E B $$ P * US X₂ x² = E E # #I CXDerive the relationship between average headway, space mean speed, and average spacing. Compute the space mean speed (in miles per hour) if the cars are moving at an average headway of 3 seconds and average spacing of 50 ft.Consider the following data: Design speed = 96 kmph Speed of overtaken vehicle = 80 kmph Reaction time for overtaking = 2 sec Acceleration = 2.5 kmph/sec The safe overtaking sight distance on a two-way traffic road way be nearly