QUESTION 4 What is the calculated stopping sight distance (ft) for a -3% grade when the design speed is 55 mph, assuming the AASHTO recommended deceleration rate and perception-reaction time.
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- What is the intersection sight distance (ft) needed at a yield controlled intersection for a passenger car to turn left onto a 2-way, 2-lane road with a design speed of 50 mph? [round to the nearest foot] Response Feedback: ISD=1.47V major gWhat is the intersection sight distance (ft) needed at a yield controlled intersection for a passenger car to turn right onto a 2-way, 2-lane road with a design speed of 50 mph? [round to the nearest foot] Response Feedback: ISD=1.47V major gQUESTION 1 What deceleration rate (ft/s²) does AASHTO recommend for calculating stopping sight distance?
- Q- Highway geometric design & planning. The design speed is 100 kmph, perception reaction time is 3 s. The coefficient of friction is 0.25. What is the safe stopping sight distance SSD?What is the intersection sight distance (m) needed at a stop controlled intersection for a passenger car to turn left onto a 2-way, 2-lane road with a design speed of 90 km/h? [round to the nearest meter] Response Feedback: ISD=0.278V t major gA vehicle moving in wet weather along down grade highway of (- 4%) grade. The design speed (48mile/hr.), (f = 0.30), (t = 2.50 Sec.). The stopping sight distance you %3D %3D recommended is equal to:
- For the through movement of the north-bound approach, what is the minimum change and clearance interval (CCL)? Assume a travel speed of 45 mph. Geometric layout is shown in the figure below. Mind you - - that approach is located along a +3% upgrade. Let's consider a semi truck as our design vehicle, which has a vehicle length of 72 ft! a. 3.3 sec b. 4.7 sec C. 5.5 sec d. 7.8 sec JINI 60 ft. 48 ft. TINI North-bound G=+3%Basis of speed limit: A Average speed B Modal speed c) 50th percentile speed D 85th percentile speedDetermine the minimum stopping sight distance on a -3.5% grade for a design speed of 110 kph. Coefficient of friction between tires and pavement is 0.28. Driver’s reaction time (including perception time) is 2.5 sec.
- Ninth Lecture Civil Dept. Example 15.8 Location of Object Near a Horizontal Curve A horizontal curve with a radius of 240 m connects the tangents of a two-lane highway that has a posted speed limit of 56 kmph. If the highway curve is not super- elevated, e = board can be placed from the centerline of the inside lane of the curve, without reducing the required SSD. Perception-reaction time is 2.5 s, and f 0.35. 0, determine the horizontal sightline offset (HS0) that a large bill-plz, solve this problem, it is not graded question. Transportation Engineering-1 During a 70 sec period, a detector is occupied by vehicles for the following times: 0.31, 0.39, 0.41, 0.35, and 0.53 sec. Estimate the values of flow (q), density (k) and speed (v). Assume that the loop detector is 10 ft and that that the average length of the vehicle is 20 ft.QUESTION 4 What is the intersection sight distance (ft) needed at a yield controlled intersection for a passenger car to turn right onto a 2- way, 2-lane road with a design speed of 50 mph? [round to the nearest foot]