A vertical curve is needed to join to tangents; G1=2% and G2=5%. Assuming the worst case scenario for braking, and the AASHTO recommended values for deceleration and perception-reaction time, calculate the minimum length of curve (ft) needed to satisfy the safety criteria. The design speed is 50 mph.

Q: Q5. An existing vertical curve on a highway joins a (+4%) grade with a (-4%) grade. If the length of…

A:

Q: The maximum allowable speed of a car that could travel a circular curve is 88 kph. If the impact…

A: Impact factor=0.17 Speed (v)=88kph

Q: A vertical curve is needed to join to tangents; G₁=0% and G₂=-5%. Assuming a level grade (0%) for…

A:

Q: A vertical curve is needed to join to tangents; G₁=0% and G₂=-5%. Assuming a level grade (0%) for…

A: Vertical curves are formed when two different gradients meet at a point. If convexity of curve is…

Q: A simple horizontal curve has 35 degrees of curvature and subtends an angle of 110 degrees. If the…

A: Given :- Degree of curvature, D = 35° Intersection Angle, I = 110° Stationing of PC = 3 + 65 ft

Q: Determine the minimum length of a sag vertical curve if the grades are -4% and +2%. The design speed…

A: G1 = -4%G2 = 2%V = 70 mpht = 2.5 sec a = 11.2 ft/s2

Q: The maximum allowable speed of a car that could travel a circular curve is 85 kph. If the impact…

A: Given data: Speed of car=85 kmph Impact factor=0.21   It is asked to to find the degree of the…

Q: A transition curve is to be provided on a 2 lane road on a mountainous terrain for which design…

A: A transition curve is to be provided on a 2 lane road on a mountainous terrain.The design speed is…

Q: A vertical curve is needed to join to tangents; G₁=5% and G2=2%. Assuming the worst case scenario…

A:

Q: A Sag curve is required to join a -4% and +4% grades.if the design speed is 100kph,determine  the…

A: Given data- Sag curve grades (n1) = -4% (n2) = +4% Design speed (V) = 100 kmph f=0.25 t = 2.5s a=…

Q: The sight distance of a horizontal curve with a radius of 40m is 38.2m, assuming coefficient of…

A:

Q: The design speed for two-lane road is 80 kmph. When a design vehicle with a wheel base of 6.6 m is…

A: Given data: I=6.6 m.n=2.V=80 kmhr.Off tracking=0.096.

Q: A curve is required to connect an entry grade of +3% and an exit grade of +2% to satisfy the sight…

A:

Q: Question-7 A horizontal circular curve with a centre line radius of 200 m is provided on a 2-lane,…

A: Given data: A horizontal circular curve with center line radius, R = 200 m For 2- lane, 2- way SH…

Q: A vertical curve is located along the north sound bound direction at an intersection as shown below…

A: In order to check for safety of the curve in terms of stopping sight distance we need to calculate…

Q: 2. Using the values given in the table, determine the maximum design speed for the following…

A:

Q: A +8 percent grade intersects with a -2 percent grade at station (535 + 24.25) at an elevation of…

A: g1 = 8 %g2 = - 2 %PI = point of intersectionElevation of PI = 300 ftStaion of PI = 535 + 24.25…

Q: A certain roadway designed to have a speed limit of 20mph. If the superelevation is 4 and the…

A: Asked: To compute the minimum radius of the curve.   Given: Speed limit (V) = 20 mph Superelevation…

Q: The design speed for a two-lane road is 80 kmph. When a design vehicle with a wheel base of 6.6 m is…

A:

Q: Q2/ Figure below illustrates a compound curve, if the intersection angle between two tangents is…

A:

Q: The design speed for a two-lane road is 70 kmph. When a design vehicle with a wheel base of 7 m is…

A:

Q: A simple and horizontal curve road has a degree of curve of 3.4 degrees. Determine the design speed…

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Q: Determine the minimum length of a vertical curve between a -1.78% grade and a -7.8% grade for a road…

A: Answer  we are given Grade G1 = -1.78% Grade G2 = -7.8% Design speed V = 110 Km/hr reaction time Rt…

Q: Q2/ Figure below illustrates a compound curve, if the intersection angle between two tangents is…

A: Given: The given compound curve has two simple curves A and B. The intersection angle (I) between…

Q: A transition curve is required for a circular curve of radius 210 m and the gauge is 1.4 m. The…

A:

Q: ical curve is going to be designed to join a 0% grade with a +5% grade at a section of a highway.…

A: as g1<g2curve is sag curve…

Q: The ascending of a vertical curve is 1/45 and descending gradient is 1/55. If the design speed is 60…

A: Given: Ascending gradient, n1 = 1/45 Descending gradient, n2 = -1/55 (The negative sign is used due…

Q: A vertical curve is needed to join to tangents; G₁=2% and G2-5%. Assuming the worst case scenario…

A: Given :- Vertical curve Grade of first tangent , G1 =2% Grade of second tangent , G2 = 5% Design…

Q: Q2/ Figure below illustrates a compound curve, if the intersection angle between two tangents is…

A: Given data-Intersection angle between two tangents=110°Intersection angle for first…

Q: The maximum allowable speed of a car that could travel a circular curve is 85kph. If the impact…

A:

Q: Q2/ Figure below illustrates a compound curve, if the intersection angle between two tangents is…

A:

Q: A vertical curve is needed to join to tangents; G₁=1% and G2=4%. Assuming a level grade (0%) for…

A: G1 = 1% and G2 = 4% Design speed = 60 m/hr  As per AASHTO,  Reaction time = 2.5 sec Deceleration…

Q: A vertical curve is going to be designed to join a 0% grade with a +5% grade at a section of a…

A: G1 = 0% = 0 G2 = 5% = 0.05

Q: Find the allowable velocity on a curve of radius 350 m designed for a traffic and super elevation…

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Q: An existing vertical curve on a highway joins a +4 percent grade. Assume f=0.4 and…

A:

Q: NOTE This is a multi-part que A 45-g bullet is fired with a velocity of 480 m/s at 0 30 into a 9-kg…

A:

Q: Question 2 The maximum speed of a vehicle on a 4º curve having arc length 30 m is limited to 60…

A: Given- Degree of curve D = 4o Arc length L=30 m, Velocity V=60 kmph, It is needed to find the value…

Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.