Introduction To Transportation Engineering: Tewodros N

Chapter I
Introduction to transportation
Engineering
Tewodros N.
www.tnigatu.wordpress.com
tedynihe@gmail.com
Definition
• Transportation is
 All about movingg goods
g and people
p p
from one place to another.
 Safe,
f efficient,
ff reliable,
b andd
sustainable movement of persons
p
and goods over time and space.
Transport Engineering School of Civil and

Tewodros N. Environmental Engineering
Definition Cont…
• Transportation engineering
 Focuses on the infrastructure of transportation
 Design
g runways, y , build bridges,
g , layout
y roads and
plan docking facilities.
 Look at traffic patterns, determine when new
transport facilities are needed and come up with
better ways
 Application of technology and scientific principles
to the planning, functional design, operation, and
management
g of facilities

The characteristics of transportation
system
• Multi-disciplinary
Multi disciplinary
• Multi-sector
Multi sector
• Multi-problem
• Multi-objective
• Multi-modal

Elements of a transportation system
• Infrastructure: which includes Road,
Road
canal, rail, air Transfer points Supporting
elements (signs,
(signs signals,
signals safety)
• Vehicles: which includes Planes, trains,
autos, buses, ships, trucks
• Operators/Content : which includes
Drivers, pilots, freight, passengers

History of transportation engineering
• Humans had migrated by their feet
• Use domesticated animals to carryy ggoods
• Built machines and devices, like sleds and travois, to
help them carry more.
• Establishing trading routes
• Well-used paths became more and more permanent.
• These
Th paths h bbecame the
h fi
first roads
d
• Maintain the roads and look at ways in which they
could be made easier to travel
• The first transportation engineers.

History of transportation engineering
Cont…
• Four critical dimensions of change
in transportation
p system
y
 Change in values of the public
 Changes in the technology
 Change in operational policy
 Change
g in the demand
Major disciplines of transportation
1. Transportation Planning:
Planning:- Involves the
development of a transport model
2. Geometric Design:
Design:- Deals with physical
proportioning of other transportation
facilities
 Cross-sectional features,
 Horizontal alignment,
 Vertical alignment and
 Intersections

Major disciplines of transportation
Cont…
3. Pavement Design:
Design:- Deals with the structural
design of roads, both (bituminous and concrete)
 Drainage
g design
g
 Functional design
 Structural design .
4. Traffic Engineering:- covers a broad range of
engineering applications with a focus on
 The
Th safety
f off theh public,
bli
 The efficient use of transportation resources, and
 The mobility of people and goods.

Additional disciplines of
transportation
1. Public transportation:-
p studyy of the transportation
p
system that meets the travel need of several people
by sharing a vehicle.
 characteristics of various modes;
 planning,
 management and operations; and
 policies
li i for
f promotingi public
bli transportation.
i
2. Financial and economic analysis:- tries to quantify the
economic benefit which includes savingg in travel
time, fuel consumption, etc.

Additional disciplines of
transportation Cont…
3 Environmental impact assessment ::- attempts in quantifying the
3.
environmental impacts and tries to evolve strategies for
the mitigation and reduction of the impact due to both
construction
n tr ti n and nd operation.
p r ti n
4. Accident analysis and reduction:- looks at the causes of
accidents, from the perspective of human, road, and
vehicle and formulate plans for the reduction.
5. Intelligent transport system:- offers better mobility, efficiency,
andd safety
f with i h the
h hhelp
l off the
h state-of-the-art-
f h
technology.

Factors in Transportation
Development
• Economic Factors
• Geographical Factor
• P li i l P
Political Polices
li
• Military
• Technological Factor
• Urbanization
• Competition

Role of transportation in society
Economic role of transportation:
Transportation contributes two kinds
of utilities: place and time utility
 Social role of transportation
• Growth of Urban Centers
• Size and Pattern of Settlement
• Formation off settlements
Role of transportation in society
Cont…
 Environmental role of transportation
• Safety
• Air Pollution
• Noise pollution
• E
Energy consumption
ti
 Other impacts
• Aesthetics
• social life and social pattern

Modes of Transportation
 Means by which people and freight achieve
mobility
bilit
 Road transportation
 Intermodal transportation
 Pipelines
 Maritime transportation
 Air
Ai ttransportation
p t ti
 Rail transportation

Tha k Y
Thank You!!


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Chapter I

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

Transport Engineering School of Civil and

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