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Monday 19 January 2015

Segmen Ilmu: Do this tutorial............


 Tutorial today.....please do this..thank you. Pair only two.


q1: What THREE (3) importance of transportation?

q2: What FOUR (4) types of transportation?

q3: A lorry is travelling at 100 km/hr. The friction coeficient is 0.330 and the reaction time is 3s. Determine the SSD?

q4: Sketch TWO (2) figures of horizontal alignments with and without curves?

q5: Identify why transportation planning is important?

q6: Explain types of trips measured in a survey area when conducting Origin-Destination Survey. Show a diagram?

q7: Discuss TWO(2) types of sight distance in geometrical alignment?

q8: A vertical crest curve on a single carriagmeway road with a design speed of 80km/hr is to be built in order to join ascending grade of 5% with descending grade of 3%. The motorist eye height is assumed to be 1.0m while the object height is assumed at 0.25m. Calculate the length of vertical curve? Given SSD=150m, H1=0.91m and H2=0.14m

q9: Company sdn bhd has been awarded with a contract to build roads with a speed design of 150km/h with the angle 40 degree. The super elevation and friction coefficient is 12% and 35% with the point of intersection of tangent is in station 75 + 00.

i. The radius of circular curve
ii. The length of the curve
iii. TC station
iv. CT station

q10: A fixed time 2-phased signal is to be provided at a four legs intersection. The design hour traffic and saturation flow are in table;



Branch flow
North,N
South,S
East,E
West,W
Traffic flow, (pcu/hour)

800
400
750
600
Saturated slow,S
(pcu/hour)

2400
2000
3000
3000


The lost time per phase due to starting delays in 2 s and the intergreen interval is 5s. Assume amber time= 3s. Estimate:

i. Optimum cycle time
ii. Actual green time


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