Chester County Planning Commission Chester County PA Presenters: Randy Waltermyer Cathy Sbarbaro Transportation Special Interest Group February 19 th, 2008

Planning is a heavy user of third party transportation data from different agencies: PennDOT SEPTA TANA DVRPC Counties Municipalities (signals)

PreLRS –Completely separate centerline files and no efficient way to exchange data between them. –No cohesive data management standards between agencies –No efficient way to do analysis on data.

Why is data management important?

Respond to Questions

Why is data management important? Respond to Questions Programming

Why is data management important? Respond to Questions Programming Legislative

Why is data management important? Respond to Questions Programming Legislative Public

Why is data management important? Respond to Questions Programming Legislative Public DOTs

Why is data management important? Respond to Questions Programming Legislative Public DOTs Funders

Why is data management important? Respond to Questions Programming Legislative Public DOTs Funders Counties

Why is data management important? Respond to Questions Programming Legislative Public DOTs Funders Counties Municipalities

Why is data management important? Respond to Questions Programming Legislative Public DOTs Funders Counties Municipalities MPOs

Multiple agencies don’t have identical geometry

Multiple agencies currently don’t have identical geometry

PennDOT segment

Chester County centerline segment

TANA segment

Integrate multiple databases from multiple agencies and/or data stewards Update on regular cycles Prevent duplication of data maintenance and reduce error Multiple agencies can exchange data Multiple agencies can do analysis with third party data on their own geometry Goals:

Why use Linear Referencing Standardization for collecting and reporting data –Set standards for multiple jurisdictions (MPO, state, county and municipality) Simplify data transfer and storage –Preserves original centerline segmentation –Efficiently transfer attributes to new road layer –Reduce redundancy and error No geographic editing If segment ID changes, the data structure stays intact. LRS serve as the conduit of data exchange between agencies.

Data sets maintained by Planning Highway Functional Class

Data sets maintained by Planning Highway Functional Class Traffic Volumes –PennDOT

Data sets maintained by Planning Highway Functional Class Traffic Volumes –PennDOT –Chester County

Data sets maintained by Planning Highway Functional Class Traffic Volumes –PennDOT –Chester County Bus Routes

Chester County Centerline

Septa Route 104

Ramps from GIS-T LRS

GIS-T Local LRS

Bus Route 104 LRSd

Event Layer tool

Route Event Generation Tool

Future Capabilities: Service area analysis Maintain a data that is compatible with state, MPO, other counties and municipalities. Value added from individual agencies can be share back to the County and vice verse. Quality control on data

Transportation Improvement Inventory Inventory of transportation needs/projects 503 projects = $5.7 Billion “Under-utilized” due to report format

2007 Inventory

CCPC ID #NF 79 SR #113 MPMS #n/a Primary Municipality:East Pikeland Project Name:Pa Coldstream Rd Improvement Type:Channelization Length (Miles):0.1 Design Cost:$80,000 Land Cost:$20,000 Construction Cost:$800,000 Total Estimated Cost:$900,000 State Senate District:19 State House District:167 AADT:17,000 Total Score:30

Proposed Development Activity 1999 to Present

Building the TII in GIS Used PennDOT’s MPMS and BMS layers as starting points Linear-referenced other projects using customized referencing tool Created series of point and line events

Challenges and Lessons Linear referencing “new alignments” Editing practices between: –events (maintenance) –feature classes (production/distribution)