Our Goal: Build a FDOT Linear Reference System(LRS) on the TeleAtlas Street Network.

1
Our Goal Build a FDOT Linear Reference
System(LRS) on the TeleAtlas Street Network.

• The LRS would enable FDOT data (RCI, Work
  Program, Crash data) to be geographically
  displayed over the TeleAtlas Street Network.
• The graphic to the right gives an example of the
  detail in the network, shown in blue.
• The FDOT Transportation Statistics Planning Base
  Map is shown in pink.
• The FDOT Transportation Statistics Planning Base
  Map was used as the guide and source for tagging
  the TeleAtlas Street Network segments with
  Roadway Id, the FDOT route identifier.

Intersection of Mahan/US 90 and Blairstone,
Tallahassee, Fl.
2
Step 1 FDOT Roadway Ids were transferred from
the System Planning Base Map to TeleAtlas Street
segments.
If a FDOT Route is represented in the TeleAtlas
Street Network as a double alignment, both sides
received the FDOT Roadway Id.
3
Components of the LRS.

• Each Segment is tagged with the Roadside, BMP
  (Begin Mile Post), and EMP (Ending Mile Post).
• The mile post fields are based on linear length
  of the segment.

4
Calibration of the LRS.

• Calibration nodes were snapped into the street
  network to force the mile post values to agree
  with mile posts shown in the straight line
  diagrams and intersection tables in RCI .
• The final. adjusted BMP/EMP values are stored in
  the fields BMPADJ and EMPADJ.

5
FDOT Roadway Ids for Off System Roads.

• Federal Highways has charged the Safety Office
  the task of identifying high crash risk segments
  on off system roads.
• To be able to do this analysis, off system street
  segments had to be grouped in logical
  corridors/routes. Each corridor/route was given
  a pseudo FDOT Roadway Id.
• The FDOT pseudo Roadway Id consisted of the two
  digit FDOT county number, A, and a unique
  number, 5 digits long, left filled with zeros.

• Every off system segment in the state was tagged
  with a pseudo FDOT Roadway Id.
• Roadside, mile post info were added.
• The off system routes were incorporated into the
  All Roads LRS..

6
Benefits of the All Roads LRS

• Individual segments can be tagged with data from
  RCI or work program.
• If these segments were input for a model, they
  would have values for AADT, number of lanes, area
  type, functional class, and work program
• RCI , Work Program data exists within the State
  Highway System.

AADT at the corner of Mahan(US 90) and Blairstone
in Tallahassee is shown above.
7
Generating Data for Non SHS Segments

• TeleAtlas is no longer the official street
  network for the State of Florida.
• All information will be moved to the NavTeq
  Street Network
• The same LRS is being created using the NavTeq
  Street Network.
• The NavTeq Street Network will be available to
  all state agencies, local governments, MPOs.
• Any agency that adopts the NavTeq Street Network
  as its base map can directly share any data like
  local counts, number of lanes, etc.
• Routines have been developed to create links
  between the LRS and any other network.
• These are the same routines that were used to
  move the LRS from TeleAtlas to NavTeq.
• In the near future there will be pilot projects
  to create links between a local GIS base map and
  the All Roads base map (the NavTeq version)
• Data from the local agency could then flow to its
  counterpart in the All Roads LRS and vice versa.
• These additional data sources would benefit both
  local and statewide models.