Sustainable
transport
refers
to the broad subject of transport
that
is or approaches being sustainable.
It includes vehicles,
energy,
infrastructure,
roads,
railways,
airways,waterways,
canals,pipelines,
and terminals. Transport operations and logistics
as
well as transit-oriented
development are
involved. Transportation sustainability is largely being measured by
transportation system effectiveness and efficiency as well as
the environmental
impacts of
the system.
Sustainable
transport systems make a positive contribution to the environmental,
social and economic sustainability
of
the communities they serve. Transport systems exist to provide social
and economic connections, and people quickly take up the
opportunities offered by increased mobility.The advantages of
increased mobility need to be weighed against the environmental,
social and economic costs that transport systems pose.
Green
Vehicle
Example
of sustainable transport is Green Vehicle.A green
vehicle
or
environmentally
friendly vehicle
is
a road motor
vehiclethat
produces less harmful impacts to the environment
than
comparable conventional internal
combustion engine vehicles
running on gasoline
or
diesel,
or one that uses certain alternative
fuels.Green
vehicles can be powered by alternative
fuels and
advanced vehicle technologies and include hybrid
electric vehicles,
plug-in
hybrid electric vehicles,battery
electric vehicles,
compressed-air
vehicles,
hydrogen
and
fuel-cell
vehicles,neat
ethanol vehicles,
flexible-fuel vehicle,natural
gas vehicles,
clean
dieselvehicles,
and some sources also include vehicles using blends of biodiesel
andethanol
fuel or
gasohol.Several
author also include conventional motor vehicles with high fuel
economy,
as they consider that increasing fuel economy is the most
cost-effective
way
to improve energy efficiency and reduce carbon emissions in the
transport sector in the short run.
As
part of their contribution to sustainable
transport,
these vehicles reduce air
pollution and
greenhouse
gas emissions,
and contribute to energy
independence by
reducing oil imports.
Environmental
Sustainability
Healthy
ecosystems provide vital goods and services to humans and other
organisms. There are two major ways of reducing negative human impact
and enhancing ecosystem
services and
the first of these is environmental
management.
This direct approach is based largely on information gained from
earth
science,
environmental
science and
conservation
biology.
However, this is management at the end of a long series of indirect
causal factors that are initiated by human consumption,
so a second approach is through demand management of human resource
use.
Management
of human consumption of resources is an indirect approach based
largely on information gained from economics.
Herman Daly has suggested three broad criteria for ecological
sustainability: renewable resources should provide a sustainable
yield (the
rate of harvest should not exceed the rate of regeneration); for
non-renewable resources there should be equivalent development of
renewable substitutes; waste generation should not exceed the
assimilative capacity of the environment
Social
Equity
There
are multiple definitions of social
equity
as
it is a new term; each industry has seemed to take on a different
connotation. The following provides for examples of each connotation.
Social Equity is the least defined and least understood element of
the triad that is Sustainable Development yet is integral in creating
sustainability - balancing economic, environmental and social equity.
Vital
communities meet the needs of all of their citizens.They provide good
schools, affordable housing, and the basic services that enable even
the least affluent to live comfortably.A healthy society fosters a
wide sense of individual responsibility for the community.
Economy Sustainability
Economic
sustainability is the term used to identify various strategies that
make it possible to use available resources to their best advantage.
The idea is to promote the use of those resources in a way that is
both efficient and responsible, and likely to provide long-term
benefits. In the case of a business operation, it calls for using
resources so that the business continues to function over a number of
years, while consistently returning a profit.
In
most scenarios, the measure of economic sustainability is presented
in monetary terms. The worth of assets and resources in dollar
figures is common, as is identifying the amount of return generated
by the efficient use of those resources. The idea is to aid in
identifying areas of the operation in which resources are not being
utilized in the most efficient manner, and take the steps to correct
the situation. At the same time, the proposed changes to the
operation are considered in terms of their overall effect on the
production flow, making it possible to address any potential
difficulties later in the process before the changes are actually
implemented. Doing so means engaging in a strategy known as
cross-sectoral coordination, which involves identifying what impact
changes in one area of the operation will have on subsequent phases
of the production process.