4. A tall building is located 60 ft from the centerline of the right lane of a local road and 40 ft from thecenterline of the right lane of an intersecting lane. The maximum speed at the intersecting road is 60mph. Assume level grade.a.What should be the speed limit on the local road such that the minimum sight distanceis provided to avoid any imminent collisions?b.If the minimum distance is not available, what would be your recommendation forsafe operation?Table 1: Suggested lengths of Sight-Triangle for Right-turn casesDesign Speed (mi/h)1520253035404550556065707580Length of Leg (ft)7090115140165195220245285325365405445485

Answered: 4. A tall building is located 60 ft…

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter15: Geometric Design Of Highway Facilities

Section: Chapter Questions

Problem 23P

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A tall building located in Berea is located 13.5 m from the centerline of the right lane of a local road and 19.5 m from the centerline of the right lane of an intersecting road. The approach grade of the intersection is 2% and the lane width is 3m. If the maximum speed limit on the intersecting road is 56 km/h, what should the speed limit on the local road be such that the minimum sight distance is provided to allow the drivers of approaching vehicles to avoid imminent collision by adjusting their speeds?
A developer has requested permission to build a large retail store at a location adjacent to the intersection of an undivided four-lane major road and a two-lane minor road. Trafﬁc on the minor road is controlled by a stop sign. The speed limits are 35 and 50 mi/h on the minor and major roads, respectively. The building is to be located at a distance of 65 ft from the near lane of one of the approaches of the minor road. Determine where the building should be located relative to the centerline of the outside lane of the major road in order to provide adequate sight distance for a driver on the minor road to turn right onto the major road after stopping at the stop line. Design vehicle is a single-unit truck. Lanes on the major road are 12 ft wide.
3-19 The radius of a horizontal curve on an existing highway was field-measured to be 243 m. The pavement on this two-lane highway is 6.6 m wide, and the elevation difference between the inside and outside of the curve is 0.43 m. The posted speed limit on the road is 96 km/h. Is this a hazardous location? If so, why? What action will you recommend to correct the situation?
A level, rural, two-lane highway has a 10-degree curved section as it passes by a large build- ing. The obstructing corner of the building is 24.5 ft away from the center line of the highway. (a) If the lanes of the highway are 11 ft wide, what is the stopping sight distance on this section? (b) What is the safe operating speed on the section in case the corner is only 17 ft away from the center line of the highway?
The details of a 12-hour volume study for a 4- leg road junction are tabulated below. The N-S major road has two through lanes on each approach while the E-W minor road has one through lane on each approach. Examine the fulfilment of traffic signal Warrants 1 (Condition B) using the MUTCD 2009 standards. Minor Rd. (Higher Major Rd. (Total of approaches) Hour Start approach) Hr 1 Hr 2 Hr 3 734 98 880 122 850 120 Hr 4 955 100 Hr 5 941 105 Hr 6 915 95 Hr 7 1040 140 Hr 8 1010 150 Hr 9 790 156 а. W1B is not met b. W1B is met
4. A diversion sign is located 230ft to the diversion point on a 3% down hill road. The road sign can be seen 200ft away by a driver. If the posted speed limit for the road is 65mph, determine the minimum speed limit that can be imposed on the diversion sign
3. A developer has applied for a construction permit for a building at the southeast corner of an intersection. The intersection is controlled with a stop sign on the minor road. The four-lane major road in the east-west direction has a design speed of 50 mph. The two-lane minor road is controlled by a stop sign. Determine whether the permit should be approved for the following conditions. a. Design vehicle - Single-Unit truck b. Approach grade = 4% C. Maximum feasible distance of the building from the center of the nearest lane of the four-lane road = 21 ft d. Maximum feasible distance of the building from the center of the nearest lane of the two-lane road = 15 ft
A developer has requested permission to build a large retail store at a location adjacent to the intersection of an undivided four-lane major road and a two-lane minor road. Traffic on the minor road is controlled by a stop sign. The speed limits are 35 and 50 mph, respectively. The building is to be located at a distance of 65 ft from the near lane of one of the approaches of the minor road. Determine where the building should be located relative to the centerline of the outside lane of the major road in order to provide adequate sight distance for a driver on the minor road to turn right onto the major road after stopping at the stop line. Design vehicle is a single-unit truck. Lanes on both roadways are 12 ft wide. Grades are approximately level.
A two-lane minor road intersects a two-lane major road at 90° forming a four-leg intersection with traffic on the minor road controlled by a yield sign. A building is located 125 ft from the centerline of the outside lane of the major road and 35 ft from the centerline of the nearest lane of the minor road. a) Determine the maximum speed that can be allowed on the minor road if the speed limit on the major road is 45 mi/h. b) If the speed limit on the major road were 40 mi/h, determine the minimum distance that the building can be located from the centerline of the outside lane of the major street.
A developer has applied for a construction permit to build a supermarket at the southeast cornerof an intersection that is formed by a four-lane divided highway in the east-west direction and atwo-lane road in the north-south direction. Traffic on the two-lane road is controlled by a stop signat the intersection. The speed limit on the four-lane highway is 88 km/h. using the sight trianglerequirements at the intersection (Case B1), determine whether permission should be given for theconstruction if the following conditions exist. Provide a diagram for your solution.Major road lane width = 3.6 mMinor road lane width = 3.3 mMedian lane = 2.8 mDesign vehicle is a passenger carApproach grade = 2%Maximum feasible distance building from the center of the nearest lane of four-lane road = 5.4 mMaximum feasible distance building from the center of the nearest lane of two-lane road = 16.5 m
A local street named Dysc Drive has a series of intersections controlled by four-way stop signs (because of sight problems, perhaps). The next intersection is controlled by a stop sign on Dysc Drive but no signs on the cross street (because it has the right-of-way). Discuss the safety aspects of this design, putting yourself in the place of a driver proceeding along Dysc Drive in this direction.
A road with a design speed of 55 mph has a utility pole located 27 ft from the edge of travel lane. If the ADT for the road is 1,850 vpd and the sideslope slopes down at a 1V:4H grade, is the utility pole located within the clear zone?

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