Welcome to “What’s GIS?”. Geospatial Literacy at VDOT. Before we get started …. How many of you have ever used a GIS?. Most of you probably have!. MapQuest, Yahoo Maps & Google Maps are GIS Applications. VDOT’s public web-based GIS Application is available at
Geospatial Literacy at VDOT
VDOT’s public web-based GIS Application is available at
GPS is a
Satellite Navigation System
**Data - the most expensive and most important part of a GIS! Without the right data in the right format, you cannot perform the right analysis. You cannot ask questions of the data that your data cannot answer!
Project CADD files
Now think about what you see:
You see: I-95, vehicles, a shoulder, signs, lanes and pavement.
GIS people see: Spatial Data
Here is the road
At VDOT attributes are called
Obvious choices: Rte. no., # of lanes
speed limit, surface type.
Less Obvious: # of crashes, traffic counts,
Having attributes stored digitally enables users to sort, search and ask questions quickly and efficiently.
Examples of VDOT databases are: HTRIS, IPM and RUMS.
GIS combines Spatial data with Business data.
G I S
Harnessing the power of existing business data and spatial analysis, we are helping VDOT work better, smarter and faster..
Using GIS can help meet VDOT’s Strategic Objective of “identifying and using new technologies to deliver our products and services.”
The GIS Program currently supports numerous applications and uses over 100 data layers.
VDOT maintains thousands of miles of roads, and most Business Data is location-based.
Let’s look at a few examples of how GIS is being used at VDOT.
Conflicts between construction projects and the environment.
The flexibility of having unique but relational geospatial data allows for visualization and analysis of ‘what if’ scenarios using GIS tools.
Highway analysis in Richmond’s West End.
Aggregated land use zoning with 2026 modeled traffic forecast
Traffic Engineering Division
Prioritize High Crash Locations
The 511 site is a great site for planning a trip or
your travel route home from work. The traffic
Cameras allow you to see a real time view of the
http://gis.virginidot.org > click GDBMS
Stores data provided to ITD-GIS from Materials Division.
Display of Area Headquarters