Transcript
Page 1: Transportation planning

TRANSPORTATION PLANNING

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TORSHA DATTA CHOUDHURI-110TOUSIF JAMAN-111

TUHIN MAJUMDAR-112TULIKA BARMAN-113

VED PRAKASH MANDAL-114

MENTORED BY PROF. SUMIT NARAYAN BOSE

TECHNO INDIA COLLEGE OF TECHNOLOGY

CIVIL ENGINEERING

28/04/2016

TRANSPORTATION PLANNING

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TRAFFIC FLOW CHARACTERISTIC

ACCIDENT STUDY TRAFFIC VOLUME STIDIES SPEED STUDY

FAQS FUNCTIONS METHODOLOGY ORIGIN-DESTINATION

STUDIES PARKING STUDIES

OVERVIEW

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FAQS ON TRANSPORTATION PLANNING

What is urban transportation

planning?

Why are highways so important?

What is the future of urban transportation

planning?

Image source-www.pinterest.com

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FUNCTIONS OF URBAN TRANSPORTATION PLANNING

1. To define transportation planning

2.To identify highway system

component

3. To forecast traffic volume after a certain

number of years

4. To recall the purpose and process

of construction planning design

5. To identify the mode choice behavior of commuters

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METHODOLOGY

INVENTORIES

TRIP GENERATIO

N

TRIP DISTRIBUTI

ONMODAL SPLIT

TRAFFIC ASSIGNME

NT

PLAN PREPARATION

AND EVALUATION

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TRIP GENERATION & DISTRIBUTION

The relationships between trips generated and the relevant variables are expressed as mathematical equations, generally in a linear form. For example,the model could take the following form:Tij = a0 + a1Z1j + a2Z2 j +L+ anZnj

The Gravity Model is as followsTij= 

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The function used to estimate the total utility provided by a mode option -

Um = bm++e

Modal split

Image source-EMBARQ

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ORIGIN-DESTINATION STUDIES

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METHODS OF ORIGIN AND DESTINATION STUDIES

Road side interview method Return postcard method

Tag on car method Home interview method Work spot interview methodImage source- hits_training.com, www.pbase.com, www.pinterest.com, wikipedia.org, www.wahm.com, www.dumblittleman.com

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TYPICAL DESIRE LINE MAP AND ROUTE VOLUME MAP

Desire line map

Route Volume map

Image source-www.urbanohio.com, www.globalsecurity.org

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Parking is one of the major problems that is created by the increasing road traffic. It is an impact of transport development. The availability of less space in urban areas has increased the demand for parking space especially in areas like Central business district. This affects the mode choice also. Parking also has a great economical impact.

PARKING STUDIES

www.urbancapture.com

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OBJECTIVE OF PARKING STUDIES

Parking studies are used to evaluate the facilities available like• Parking demand-The parking demand varies during

the day and reaches a peak value during heavy parking demand time

• Parking characteristics – It refers to the practices prevalent in the area under consideration, mainly whether the vehicles are parked on street or off street

• Parking space inventory- the area under study is surveyed and kerb parking and off street parking facilities are plotted on a map

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PARKING SYSTEM

On street parking

• Parallel parking• 30 parking• 45 parking• 60 parking• Right angle parking

Off street parking

• Mechanical car parking• Multistory car parking• Roof car parking• Surface car parking• Underground parking

www.wikipedia.org, www.urbancapture.org, www.pinterest.com

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ACCIDENT STUDIES

The problem of accidents in India is acute due to complex flow pattern of vehicular traffic along with pedestrians

Objectives of accident studies• To evaluate existing design,

regulation and control measures• To study the causes of accident and

suggest corrective treatment• To support proposed changes in

design in the particular zone• To carry out ‘before and after’

studies after implementing changes

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CAUSES OF ACCIDENTS

Road user VehicleRoad and

its condition

Traffic Road design

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ACCIDENT STUDIES & TYPICAL COLLISION DIAGRAM

Collection of accident data

Preparation of accident report

Preparation of local file

Preparation of diagrams showing type of

collisions

Application of data collected for prevention

of accidents in the future

Image source-ntl.bts.gov

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TRAFFIC VOLUME & DENSITY

TRAFFIC VOLUME(Q) • Number of vehicles

passing a particular point during unit time.

• Vehicles/hr• Measured in daily

volumes(ADT/AADT) or Hourly volumes

TRAFFIC DENSITY(K)• Number of vehicles

occupying a unit length of road at any instant.

• Vehicles/km• K= (Vs free mean

speed)

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TRAFFIC CAPACITY

Traffic volume-actual rate of flowTraffic capacity- maximum rate of flow

Types of capacity :

Basic capacity

Possible capacity

Practical capacity

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Passenger car unit is an equivalence factor use to convert the flow of different vehicle classes into one standard vehicle known as passenger car.

Passenger car unit (PCU)

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FACTOR AFFECTING TRAFFIC CAPACITY

Lane width Lateral clearance

Width of shoulders

AlignmentPresence of intersection

sRoad

geometrics

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SPEED STUDIES

Speed studies are the studies which are carried out to know the general trends in speeds of different vehicles over a particular route depending on various factors

Classified into two groups:

Spot speed study

Speed and delay study

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SPOT SPEED STUDIES

The instantaneous speed of a vehicle at a point or cross section is known as spot speed

Space mean speed• Average speed of

vehicles in a certain road length at any time

Time mean speed• Average of

instantaneous speeds of observed vehicles at the spot

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PRESENTATION OF SPOT SPEED DATA

Speed distribution

table

Frequency distribution

diagram

Cumulative speed

distribution diagram

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SPEED DELAY STUDIES

Floating curve metho

d

License plate metho

d

Interview

method

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Conclusion

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We would like to express our gratitude to the following people-Professor Sumit Narayan BoseDr Indranil Mukherjee,And the entire Faculty of Department of Civil Engineering, Techno India College of Technology

Acknowledgement

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REFERENCES

1. Road accidents in India, 2009.2. V F Babkov. Road Condition and traffic safety. MIR Publishers, Moscow, 2019.3. J Stannard Baker. Traffic Accident Investigation Manual. The traffic Institute

Northwestern University, 2019.4. Milan Batista. On the mutual coefficient of restitution in two car collinear collisions,

2006.5. S K Khanna C E G Justo. Highway Engineering. Nem Chand and Bros, Roorkee, 2001.6. K W Ogden, S Y Taylor. Traffic Engineering, and Australia. Management. Monash

University. Melbourne. Traffic Engineering and Management. Monash University Melbourne, Australia, 2019. Louis J Pignataro. Traffic Engineering. USA, 2019

7. Highway Engineering by S.K.Khanna and C.E.G.Justo (NemChand and Bros.)8. Highway engineering by Martin Roger  www.nptel.ac.in www.wikipedia.org www.in.pinterest.com


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