Subject Code:2174006
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE- SEMESTER-VII (NEW) EXAMINATION - WINTER 2020
Subject Name:Advanced Transportation Engineering
Time:10:30 AM TO 12:30 PM
Date:30/01/2021
Total Marks: 56
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Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1
(a) Draw the flow chart and show various steps involved in Transportation Planning process. 03
(b) Explain with flow chart ‘Lowry’s Derivative Model’ 04
(c) Explain different types of para-transit systems. 07
Q.2
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(a) Briefly discuss about various factors affecting trip production and trip attraction. 03
(b) Briefly explain ‘Land Use Planning’ and ‘Traffic Analysis Zones’. 04
(c) Explain the following terms with help of a sketch of study area and zones. 07
(1) Cordon line, (it) Central business district, (iii) Intra-zonal trip, (iv) Screen line
Q.3
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(a) What are the problems in urban transportation in the present scenario of high vehicle ownership? 03
(b) Explain briefly various trip distribution methods with their limitations and advantages. 04
(c) From the data given in following table, develop three trip generation equations. Show which of the parameters is more reliable and why? 07
| No. of persons in house hold | Vehicle ownership | Trips per day |
|---|---|---|
| 3 | 2 | 8 |
| 4 | 2 | 8 |
| 3 | 1 | 4 |
| 2 | 0 | 2 |
| 5 | 2 | 10 |
| 6 | 3 | 12 |
| 7 | 1 | 16 |
| 9 | 2 | 18 |
| 10 | 3 | 20 |
| 1 | 0 | 4 |
| 4 | 1 | 6 |
| 7 | 2 | 14 |
Q.4
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(a) Discuss the factors which are considered for evaluation of urban mass transport systems. 03
(b) Explain with example category analysis for trip generation analysis. What are the merits and limitations of it? 04
(c) A study area has been divided in four zones 1, 2, 3, 4. The present trip distribution matrix is given with future total trip productions and trip attractions. Develop the future trip distribution matrix using Average growth factor method. Do iteration process up to 1 stage. 07
Q.5
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(a) Describe Revealed Preference Survey and Stated Preference Survey. 03
(b) Explain briefly: (1) Metro Rail; (ii) LRT 04
(c) Using a gravity model, with an impedance term of the form Ca, estimate the number of trips from zone — 3 to all other zones. Take a = 1.8 07
| Zone | Travel time to zone-3 (min) | Production | Attractions |
|---|---|---|---|
| 1 | 14 | 20000 | 10000 |
| 2 | 22 | 15000 | 30000 |
| - | 35000 | 18000 | |
| 16 | 25000 | 10000 | |
| 30 | 18000 | 40000 |
Q.6
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(a) Discuss briefly the methods of route assignment analysis. 03
(b) Explain with sketches transit routing problem. Discuss the main entities involved in transit routing. 04
(c) The design year total person trips distributed between four zones A, B, C and D are shown in the table below. The modal split analysis shows 25/75 for private car vs public transport as an overall split. The peak period car occupancy is 2.5 persons per car and 50 persons per bus. Develop the trip matrices for the two modes and total vehicular trips. If the goods vehicles constitute at 20% of the person vehicle trips, calculate the total vehicle trips. 07
| A | B | C | D | |
|---|---|---|---|---|
| A | - | 2000 | 700 | 2200 |
| B | - | 800 | 900 | |
| C | 1600 | - | - | 1520 |
| D | 700 | 1900 | - | - |
Q.7
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(a) Briefly explain the Moore’s algorithm for finding shortest path. 03
(b) On an urban corridor regular bus transit is operated with headway of 10 minutes during peak hour. The reliability of transit arrival at a stop is observed 80%. If the seating capacity of a bus is 50 and load factor 1.5. Calculate vehicle capacity of transit. If 50% schedule operated during peak hour and double decker bus with seating capacity of 75 and load factor is 1.25, what will be the change in passenger capacity? 04
(c) Explain with sketches various types of urban forms and structures. How these are affecting transportation planning? Suggest the suitable mass transit systems for different urban forms. 07
Q.8
(a) Briefly describe the following parameters used for transit system design: Headway, Generalized cost, Vehicle capacity. 03
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(b) Describe ‘Transportation System Management (TSM)’ planning, its objectives, planning cycle and various actions. Suggest suitable ITS applications in TSM. 04
(c) Given is the number of trips between these two zones is 07
TRC trip assignment procedure (upto 2 iteration stages).
re given i
e
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our. Assign tEe trips using iterative
| Route No. | No. of lanes | Speed Limit (kmph) | Length (km) | Critical Volume (vph/lane) | Critical travel time (min/km) | Ideal travel time with no volume (min/km) |
|---|---|---|---|---|---|---|
| 1 | One | 50 | 5 | 600 | 3 | 2.0 |
| 2 | One | 80 | 8 | 1200 | 4 | 2.8 |
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