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The Costs & Benefits of Implementing a
MLLRSSponsored by the AASHTO and FHWA and
Conducted in the NCHRP
Value Engineering
OThis presentation is based on the value engineering study that was conducted for the NCHRP to support the NCHRP Project 20-07, Task 302.
OThe task was requested from the American Association of State Transportation Officials (AASHTO)
OThe report was conducted to identify the costs and benefits of implementing and maintaining a statewide Multi-Level Linear Referencing System (MLLRS)
Value Engineering
O The VE study was conducted at the Iowa Department of Transportation with a study team consisting of:
• Renee L. Hoekstra, CVS, RH & Associates
• Jerome Breyer, Works Consulting
• Oscar Jarquin, California Department of Transportation
• Jun Wu, North Carolina Department of Transportation
• Michael Sheffer, Maryland State Highway Administration
• Thomas Martin, Minnesota Department of Transportation
• Peggi Knight, Iowa Department of Transportation
• Eric Abrams, Iowa Department of Transportation
• Karen Carroll, Iowa Department of Transportation
• Ryan Willie, Iowa Department of Transportation
• Reginald Souleyrette, University of Kentucky, Civil Eng.
• Bruce Aquila, Intergraph
• Gary Waters, ESRI
Presentation Objectives
O What is LRS?
O The definition of a MLLRS
O Why implement a MLLRS
O The benefits and costs associated with a
MLLRS
O Implementation considerations
O Examples
What is a Linear Referencing System
O Ability to locate on a linear network using one to many linear referencing methods
O A linear referencing method is a standard way to locate on a linear network. Examples:O Reference Post
O Literal Description
O Mile Point
O Coordinate Route
O Having a LRS provides the ability to take disparate data and make better business decisions
Linear Referencing System (LRS)
O Gives DOT a common centerline network for
all roads
O Locate on network using multiple linear
referencing methods
O If data is located using LRS, linear overlays
and dynamic segmentation can happen
O Can include a time component
What is a MLLRS?
O Meets the NCHRP 20-27(2) data model
O Includes multiple linear referencing methods, multiple
cartographic representations and multiple network
representations
O Associates with a central object referred to as a “linear
datum”
O Meets the needs of integrating increasing amounts of
linearly referenced data
O Logically linked with other organizational electronic
management systems
Linear Referencing Summary
10
Cartographic
Representation
Datum
Routable
Network
Business Data
Why is it important to implement MLLRS?
O Data and information more readily available
O Quality, timeliness and efficiency
improvements
O Improved analysis leads to data-driven
decision support
O Improved communication and information
sharing
O Improved customer service
Benefits of a MLLRS in a State Agency
O Quantitative Benefits
O Identified as time and cost savings by
reducing:
O Staff hours
O Operational hours
O Hours within other departments
O Improved stewardship of data
O Business/Operational unit improvements
Quantitative Benefits
O Business/Operational Unit Improvements
O Sample Business/Operational Units Used
O Safety improvements
O Reduced level of risk for litigation
O Reduced impacts to projects
O Reduced maintenance
O Baseline Savings
O $1.1 million
O Optional Functional Elements Savings
O $2.5 million
Qualitative Benefits
O Ease of use and accessibility
O Flexibility and integration
O Quality of data
O Internal and external collaboration
O Data-driven decision support
Other Identified Benefits
O Facilitates the Breakdown of Departmental
Silos
O Able to Take Advantage of External
Resources
O Increased Opportunity to Integrate MLLRS
into the Field Operations
Costs to Implement a MLLRS
O Capital Costs
O Baseline - $2 million
O Optional Functional Elements
O Manage Change - $31,650
O Model Connectivity - $795,000
O LRM Development - $40,000 each
Costs to Implement a MLLRS
O Maintenance Costs
O Baseline - $252,000
O Optional Functional Elements
O Minor adjustments only
Cost/Benefit Analysis
O Based on a 5-year period
O 3% escalation rate, constant dollar
approach
O Baseline - $2.5 million in savings
O Cost/Benefit Ratio – 2:1
O Optional Functional Elements - $10 million in
savings
O Cost/Benefit Ratio – 21:1
MLLRS Implementation Considerations!
O Organizational Support
O Establish model specifications and scope of
work to be used to obtain outside services
and/or complete the work with existing staff
O Identify functional requirements needed
within the agency to meet the baseline
performance attributes
O Establish a maintenance plan and approach,
capitalizing on lessons learned
MLLRS Implementation Considerations
O Establish a training plan and approach
O Secure resources – manpower, funding,
staffing, contingency for staff turnover, etc.
O Determine the schedule progress timeline
and monitor it
O Set and manage internal expectations
O Develop an outreach plan internally with
staff and management
MLLRS
O MLLRS can make DOT more efficient by
O Linear overlays
O Common centerline
O Transformation of one LRM to another
O Standard collection methods
O Dynamic segmentation of routes based on
business data and LRM
O MLLRS is a tool that makes data integrate
Intersection Linear OverlayDynamic Segmentation Analysis
Pavement Type
Speed Limit
AADT Values
IRI
35 45 55
34 30 32
Asphalt Concrete
30000 22000
Asphalt
0
0
0
0
2.1
2.5
0.5 2.3 4.8
4.1 5.2
5.80.2
Linear Query Results
where: Speed => 45
AADT < 25000
Pavement = Asphalt
IRI =< 30
5.85.22.5 4.1
Sign Management
O Signs located in the field
O Coordinate Route LRM
O Reference Post LRM
O LRS assigns LRM location
O Reference Post on primary
O Signs can now be viewed in GIS
O Aerial imagery
O LiDAR
O Data and geometry stored in Oracle
Sign Management
Five Year Program
O LRM – Reference Post
O Budget and planning for projects
O Process in place since 2006
O Process to digitize new roads
O LRS can handle proposed roads
O Logistics to get new roads added
Five Year Program
Electronic Records Management system (ERMS)O Most DOT documents have a location
O Add geometry to documents
O Documents get spatial location from
O An LRS LRM
O Reference a system that has geometries
O Spatial location enables ERMS and other
business applications
ERMS
ERMS
Maintenance
O Uses LRS to make a tie to route
O Segments produced to display data
O Snow Plow locations
O Materials used
O Pavement and Air temperature
O Queries and linear overlays
ROI for GIS?A 20 year ROI analysis for Iowa Geospatial Infrastructure (IGI) shows a
Net Present Value of $271 million, a Present Value of Costs at $56
million and an annualized Return on Investment of 24%. For every dollar
spent on IGI, $5 are generated in benefits.
ROI for GIS?O Labor avoidance acquiring, creating and manipulating
cadastral data = 725 hours/year
O Labor avoidance researching ownership = 438
hours/year
O Labor avoidance acquiring, creating and manipulating
hydrology = 510 hours/year
O Labor avoidance updating city limits in GIS = 1040
hours/year
O Labor avoidance maintaining & analyzing LRS & GIMS
= 2912 hours/year
Questions