Mobility and accessibility are considered the “ying and yang” of transportation. The goal is to increase the overall capability of the transit system while not compromising efficiency and ease of access. ppt download slideshare presentations stroke ppt slideshare download slideshare ppt online slideshare powerpoint iot ppt slideshare

1. Functions of Transportation
Network - concept of
accessibility and mobility
Prepared By
Gayathry Satheesan

2. Introduction
• A transport network, or transportation network is a realisation of
a spatial network, describing a structure which permits either vehicular
movement or flow of some commodity.
• Examples include but are not limited to road networks, railways, air
routes, pipelines, aqueducts, and power lines.

3. Functions of Transportation network
• Coordinating and developing comprehensive transportation policy for the
State; coordinating and assisting in the development and operation of
transportation facilities and services for highways, railroads, mass transit
systems, ports, waterways and aviation facilities; and, formulating and keeping
current a long-range, comprehensive statewide master plan for the balanced
development of public and private commuter and general transportation
facilities.

4. • Administering a public safety program for railroads and motor carriers
engaged in intrastate commerce; directing state regulation of such carriers in
matters of rates and service; and, providing oversight in matters relative to
the safe operation of bus lines, commuter railroads and subway systems that
are publicly subsidized through the Public Transportation Safety Board.

5. Concept Of Accessibility And
Mobility

6. Mobility
• It is the ability and level of ease of moving goods and services.
• Some examples of mobility include: Interstate highways providing
designated truck lanes to increase the overall amount of goods
transported; Bus Rapid Transit (BRT) systems with bus only lanes that
increases the efficiency of moving people while removing automobiles
from the roads.

7. • Congestion Management Systems are the trend in mobility due to the
lack of funds and the land constraints to keep expanding the transit
system infinitely.
• These systems manage travel demand through innovative ideas to
increase volume and capacity.

8. Accessibility
• It is the quality of travel and takes place at the community and
individual level through Access Management techniques to provide
access to various land uses.
• It focuses on travel time, travel cost, travel options, comfort, and risk
while addressing the needs of all within the community.

9. • Mobility and accessibility are considered the “ying and yang” of
transportation.
• The goal is to increase the overall capability of the transit system while
not compromising efficiency and ease of access.

10. • All locations are not equal because some are more accessible than others,
which implies inequalities.
• Thus, accessibility is a proxy for spatial inequalities. The notion of
accessibility consequently relies on two core concepts:
• The first is location where the relativity of space is estimated in relation to
transport infrastructures since they offer the means to support mobility.
• Each location has a set of referential attributes, such as its population or level
of economic activity.

11. • The second is distance, which derived from the physical separation between
locations.
• Distance can only exist when there is a possibility to link two locations
through transportation.
• It expresses the friction of distance and the location which has the least
friction relative to others is likely to be the most accessible.
• Commonly, the friction of distance is expressed in units such as in kilometers
or in time, but variables such as cost or energy spent can also be used.

12. • There are two spatial categories applicable to accessibility problems, which
are interdependent:
• The first type is known as topological accessibility and is related to
measuring accessibility in a system of nodes and paths (a transportation
network).
• It is assumed that accessibility is a measurable attribute significant only to
specific elements of a transportation system, such as terminals (airports,
ports or subway stations).

13. • The second type is known as contiguous accessibility and involves
measuring accessibility over a surface.
• Under such conditions, accessibility is a cumulative measure of the attributes
of every location over a predefined distance, as space is considered in a
contiguous manner. It is also referred to as isochrone accessibility.
• Last, accessibility is a good indicator of the underlying spatial structure since
it takes into consideration location as well as the inequality conferred by
distance to other locations.

14. The condition of being mobile
A measure of the extent to
which something is mobile
The movement of people or
things
Ease of movement between
economic conditions
Mobility
The quality of being
accessible, or of admitting
approach; receptiveness.
Features that increase software
usability for users with certain
impairments
Accessibility
•.

15. THANKYOU