4. Compute the passing sight distance for the following data:Passing Vehicle Speed = 60 kphOvertaken vehicle speed= 40 kphTime of initial maneuver= 3.4 secAverage acceleration= 1.90 kph/secTime passing vehicle occupies the left lane= 5.6 secd3 = 100 ft.5. A sag vertical curve is to be designed to join a -5% grade to a +2% grade. If thedesign speed is 40 mi/h, determine the minimum length of the curve that will satisfy all criteria(headlight sight distance criteria, comfort ariteria). Assume an 11.2 ft /sec? and perception-reaction time of 2.5 sec.Rider's comfort criterion for English Units:L= Av²46.5centrifo gal nceleuntim Sacs int exced I ftleetL=Length of Carere in ftV= deiga sped or vele ciby in%3D%3D%3DA- in %

Given data Passing vehicle speed (V1) = 60 Kph Overtaken vehicle speed (V2) = 40 Kph Time of…

4. Compute the passing sight distance for the following data: Passing Vehicle Speed 60 kph Overtaken vehicle speed= 40 kph Time of initial maneuver= 3.4 sec Average acceleration= 1.90 kph/sec Time passing vehicle occupies the left lane= 5.6 sec d3 = 100 ft. 20

4. Compute the passing sight distance for the following data: Passing Vehicle Speed 60 kph Overtaken vehicle speed= 40 kph Time of initial maneuver= 3.4 sec Average acceleration= 1.90 kph/sec Time passing vehicle occupies the left lane= 5.6 sec d3 = 100 ft. 20

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Assume you are an observer standing at a point along a three‐lane roadway. All vehicles in lane 1 are traveling at 30 mi/hr, all vehicles in lane 2 are traveling at 45 mi/hr, and all vehicles in lane 3 are traveling at 60 mi/hr. The spacing between vehicles in each lane is 0.5 mile. If you collect spot speed data for all vehicles as they cross your observation point for 2 hours, what will be the time‐mean speed and space‐mean speed for this traffic stream?
Q- Determine the minimum non-passing sight distance that should be provided for a vehicle coming down a 6% gradient. Given that- design speed V=56 kmph Reaction time t=2 s Coefficient of friction f=0.5
Traffic on a freeway gives a Greenshield's traffic flow relationship expressed as: Q = 60k-0.16667k? At 10AM, an accident occurs 4 km downstream of an access ramp. The vehicles pull onto the shoulder of the roadway, but traffic passing the accident area slows to 10 kph as drivers survey the damage on the side of the road. A patrol car enters the freeway via access ramp, also at 10AM. Upon entering the freeway, the patrol car notes that traffic on the freeway is moving along at about 40 kph. Determine the following: 1. Capacity flow of the highway 2. Traffic shockwave created by the road accident 3. Time in AM the patrol car will reach the accident zone 4. Plotted traffic shockwave line in the Q-k traffic model diagram
A driver with 20/20 vision traveling at 55 mph in the median lane desires to exit the freeway at the exit ramp. If 5-in. letters are used, what is the minimum distance the sign should be placed ahead of the ramp exit? (Some assumptions that would be helpful are perception-reaction time = 2 sec; exit speed = 30 mph; deceleration rate = 4.80 ft/s2 a driver with 20/20 vision can read a sign at 55 ft per inch of letter height.) Discuss your results.
2 A slight bend prior to a curve means that a 65 km/h curve advisory speed sign is not visible to drivers until 95 m before the start of the curve. The 85th percentile speed of vehicles on this approach, prior to reaction and braking, has been measured by survey as 88 km/h. If it is assumed that it is desirable for vehicles to slow down to the posted 65 km/h-advisory speed before reaching the curve, what is the required distance to achieve this? Is the available sight distance adequate for this?
Calculate safe overtaking sight distance for a two way traffic road for the following data. The speed of overtaking and overtaken vehicles are 50and 40kmph respectively. The acceleration is 3kmph/sec, design speed is 60 kmph and reaction time is 2seconds.
Plz, solve this problem. Transportation Engineering-2 A four-lane highway (2 lanes in each direction) with 3.65m lanes has a horizontal curve designed for a 380 m centerline radius, and a 110 km/hr design speed. The grade is level. Use a driver perception reaction time of 2.5 sec and a vehicle deceleration rate of 3.4 m/sec2. Determine the closest distance any roadside object may be placed to the centerline of the inside lane of the roadway.(note: Do not round any value. Use calculated values).
Observers stationed at two sections XX and YY, 1000 ft apart on a highway, record the arrival times of four vehicles as shown in the table below. Vehicle Section XX Section YY A T0 T0 + 14.33 sec B T0 + 3.76 sec T0 + 18.14 sec C T0 + 7.94 sec T0 + 22.06 sec D T0 + 12.13 sec T0 + 27.87 sec If the total time of observation at XX was 20 sec, determine (a) the time mean speed, (b) the space mean speed, (c) the flow at section XX, and (d) the density on the highway
If the time of initial maneuver is (5 sec.), the time of passing vehicle occupies the left lane is (11 sec ), average acceleration is (3.5 km/hr/sec.) ,speed of passing vehicle is (80km/hr) and the speed of the slow vehicle ahead is (45 km/hr), Calculate the Minimum Passing Sight distance (P.S.D.). * P.S.D. = 436.43 m %3D P.S.D. = 563.12 m P.S.D. = 425.25 m P.S.D. = 542.44 m P.S.D. = 453.68 m This is a required question
A sign is required to be put up asking drivers to slow down to 30 km/h before entering zone Y (see figure). On this road, vehicles require 174 m to slow down to 30 kmn/h(the distance of 174 m includes the distance travelled during the perception reaction time of drivers). The sign can be read by 6/6 vision drivers from a distance of 48 m. The sign is placed at a distance of x m from the start of Zone Y so that even a 6/9 vision drive can slow down to 30 km/h before entering the zone. The minimum value of x is m. Direction of vehicle movement Road Sign | X Start of Zone Y Zone Y
What distance will a vehicle travel before coming to a complete stop from a speed of 70 mph, (a) When the vehicle is traveling on a level roadway with no grade, (b-1) When the vehicle is traveling uphill on a roadway of constant grade = 0.10, (b-2) If the roadway grade is not constant but starts at 0.10 uphill and decreases to 0 at a continuous rate, would the braking distance be equal to, greater than, or less than that in the case of a constant 0.10 uphill grade (briefly explain why) (c) When the vehicle is traveling downhill on a roadway of constant grade = 0.10. Assume a perception-reaction time of 2.5 seconds, and an a/g value equal to 0.35.