GIS public
transit accessibility analysis
ACCESSION is a travel access and travel time mapping package. It measures accessibility to and from any point based on travel costs through highway and public transit networks.
Built as a Geographical Information System (GIS),
ACCESSION quickly provides an accessibility-mapping overlay on any background map. It enables easy manipulation of the representation of the multi-modal transport system for creating scenarios. The influences these changes have on the transport system are clearly shown.
ACCESSION is a powerful tool that can be used in a wide range of transport related studies.
METHODS
Local Accessibility
Local public transit access is represented as a combination of walk time to a boarding point and the average wait time for a service. Accessibility calculations can be based on either straight-line walk time or actual walk time.
Public Transit Data Display
and manipulation
The stops and routes are displayed in a map-based environment. A query tool can be used to identify routes running through stops. A point and click facility allows the easy addition and deletion of stops. Simple creation and amendment of route data are achieved through a user-friendly GIS environment. As part of the route creation and addition facility, stop timing points can be entered and stop types can be interpolated to derive service times.
A contour tool is available for the creation of travel isochrones. Powerful GIS display and analysis functionality are available for a variety of display options such as color shading. Census data can be compared with accessibility maps and displayed alongside results.
ACCESSION has been used in a variety of projects in the UK and elsewhere.
Topics include:
- Reviews of existing public transit services
- Simplified analysis of effects of proposed service
changes
- Plans for meeting disabled persons transport requirements
- Development of business case for retail location
- Site evaluation for property business re-location
- Development of green commuting plans for private and
public sector organizations
- Development of car parking standards based on public
transit accessibility levels
- Analysis of school catchment areas and pupil travel
requirements
Please visit www.accessiongis.com for more detailed information.
