JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B. Tech IV TRANSPORTATION ENGINEERING Previous Question Paper (November/December - 2018 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
PART- A
What are the urban classification of roads?
Answer
Urban roads are classified based on their functional role in the traffic network into the following categories:
- Expressways: Designed for high-speed, through traffic with full or partial control of access.
- Arterial Streets: Major roads that carry large volumes of traffic between major centers of activity.
- Sub-arterial Streets: Roads with a lower level of mobility than arterials, serving as connectors between arterials and local streets.
- Collector Streets: Roads intended to collect and distribute traffic from local streets to the arterial system.
- Local Streets: Roads primarily providing direct access to abutting properties with no through-traffic function.
List out the various drawings and reports prepared for highway alignment.
Answer
The preparation of highway alignment requires the following essential drawings and reports:
- Key Map: Shows the entire area, including existing roads, towns, and proposed routes to provide a broad overview of the project location.
- Alignment Plan: A detailed plan showing the proposed centerline of the road, land boundaries, existing structures, and topographical features along the corridor.
- Longitudinal Section and Cross-Sections: Drawings depicting the vertical profile (gradients) and the transverse shape of the ground to determine earthwork quantities and drainage requirements.
- Detailed Project Report (DPR): A comprehensive document containing the design specifications, soil investigation data, traffic studies, environmental impact assessments, and cost estimates required for project approval and execution.
What is the off tracking distance for a speed of 80 kmph and a radius of 120 m on a two lane highway without kerbs.
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What are the advantages of manual counts in traffic volume studies?
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What do you understand by Intelligent Transportation Systems? Give two examples.
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Draw a diagram of a staggered T Junction and indicate how it is safer than a four arm Junction.
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Define negative super elevation and cant deficiency.
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Find out the expression for sleeper density for a B.G. track if 19 sleepers are used under a rail length.
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What is the significance of zoning law for an airport area?
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Name the different characteristics of aircraft and their effect on planning of airports.
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PART-B
Explain the necessity of highway planning in India.
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Compare the Nagpur and Bombay road development plans.
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Explain the merits and demerits of different types of road network patterns with neat sketches.
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Briefly explain the factors affecting the highway alignment.
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The speed and acceleration of overtaking vehicle are 60 kmph and 2.5 kmph per second respectively. Calculate the Overtaking Sight Distance for i) one way traffic ii) Two way traffic. Draw a neat sketch and show the features of OSD.
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What are the objectives of transition curve? Explain the different types of transition curves with neat sketch.
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The consolidated data of spot speeds studies are given below. Determine the a) Upper b) Lower c) Arithmetic and d) standard deviation of speed and variance.
| Speed range(kmph) | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 | 80-90 |
|---|---|---|---|---|---|---|---|---|---|
| No. of Observations | 0 | 11 | 30 | 105 | 233 | 216 | 68 | 24 | 0 |
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Explain various types of At – grade intersections with sketches and merits and demerits of each.
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Discuss the need of road safety measures at the intersections.
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What are Traffic Signs? Describe and enumerate with sketches on the three categories of traffic signs according to Indian motor vehicles Act?
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Draw the cross section of permanent way. Explain the functions of various components of permanent way.
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Explain the theories and causes of creep.
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Define gradient. Explain various types of gradients used on railway tracks.
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If a 8° curve track diverges from main curve of 5° in an opposite direction in the layout of a BG yard, Calculate the super elevation and speed on branch line, if the maximum speed permitted on the main line is 45Kmph.
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Discuss the factors that are to be considered for site selection for an airport.
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Draw a wind rose diagram and name the parts.
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The length of runway under standard conditions is 1620m. The airport site has an elevation of 140m. Its reference temperature is 32.9°C. If the runway is to be constructed with an effective gradient of 0.20%, determine the corrected runway length.
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Write a note on runway lighting system
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