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Take a Walk on the Wild Side New Technology in Transportation Engineering
Carl Henderson, Eric Marabello, Kelvin Saldana, Laurie Goudy,
Subrat Mahapatra
Travel Modeling and Traffic
Analysis/ Simulation Framework
TRAVEL DEMAND MODELS (MSTM, MPO Models)
TRAFFIC SIMULATION MODELS
MESOSCOPIC MODELS
PLANNING
PLANNING &
OPERATIONS
OPERATIONS
Maryland Statewide
Transportation Model
Multi-layer travel demand model working at national, statewide and regional levels to forecast and analyze key measures of transportation system performance. Model Applications System Performance and Long-Range Planning Corridor Studies (Commuters/ Long Distance/ Freight)
Scenario Planning and Analysis
Envisioned to be an integral part of SHA Planning and Programming Decisions
Stakeholders: MDOT, MDP, UMD, Other Modals Software: Cube Voyager
Documentation & Training Opportunities [email protected]
Traffic Analysis Tools
Traffic Analyses are performed to assess existing and future operations of an intersection, interchange, or corridor segment
Analysis methods include both static calculations and microscopic simulations
Used for all project planning, design, before/after studies at SHA
Sample Traffic analysis Tools/ Applications
• Critical Lane Volume (CLV) • HCS+ • TSIS/ CORSIM • Synchro/ SimTraffic • VISSIM • TRANSMODELER • Others…
Users: OPPE, OOTS, Districts, Others..
INCREASED FOCUS ON PERSON TRAVEL (BIKE/ PED), TRANSIT MODELING WILL FOCUS ON MESOSCOPIC MODELING TOOLS TO BRING PLANNING AND OPERATIONS TOGETHER
Maryland State Highway
Mobility Report
2012 Mobility Report summarizes the highway system performance and SHA’s efforts for 2011.
Key Areas:
• Mobility and Reliability
• Incident Management and Traveler Information Systems
• Multimodalism/Smart Growth
• Freight
Tools/ Applications:
SHA I-TMS
UMD CATT VPP Suite
UMD RITIS
SHA e-GIS Apps
Planning for Operations
A joint collaboration and coordination effort between planning, operations, and others to improve regional transportation system performance Identify and implement low cost, short-term operational improvements strategically
Tools/ Applications: • Congestion Monitoring Tools • Microsimulation Tools • Concept Development Tools • Benefit/ Cost Analysis Tools
Transit-Oriented Development
Real estate investment that encourages transit use and smart growth Land use is usually mixed, with commercial and high density residential areas often in close proximity to transit Allows for increased pedestrian and bicycle mobility SHA TOD Policy/ Implementation Support • Review TOD access and mitigation plans • Annual TOD Report Tools/ Applications: • Sub-Area Travel Demand Modeling • Microsimulation Tools to model
vehicular, transit and non-motorized travel
Other Model Applications Incident/Evacuation Traffic Management and Control
Multimodal Intersection/Corridor Traffic
Operations and Control
Major Land Development Impact Studies
Congestion Pricing / Economic Analysis
Impact Study of New Infrastructure
Highway Safety Manual
• 2010 - 1st Edition AASHTO publication
• Provides methods to perform transparent, efficient and measurable safety analyses.
• Consists of 4 parts across 3 volumes:
• Part A – Introduction, Human Factors &
Fundamentals
• Part B – Roadway Safety Management Process
• Part C – Predictive Method
• Part D – Crash Modification Factors
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Highway Safety Manual
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Nominal Safety Substantive
Safety
Examined in reference to compliance with standards, warrants, guidelines and sanctioned design procedures
The expected or actual crash
frequency and severity for a
highway or roadway
Highway Safety Manual
• NCHRP 17-50 lists leading states implementing the HSM:
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Highway Safety Manual
• No federal mandate, requiring use of the HSM.
• Some states are beginning to make this
mandatory…
• MoDOT will be requiring HSM analysis for projects with
Design Exceptions.
• Maryland’s State Highway Administration is
currently working with the National Transportation Center at Morgan State University to develop
local calibration factors.
• Initiating a planning-level pilot project on the
eastern shore… US 50 through Easton.
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Highway Safety Manual
• Current capabilities include:
• Future capabilities • NCHRP 17-45 | Freeways, Ramps & Interchanges
• NCHRP 17-58 | 6-Lane and 1-Way Urban & Suburban Arterials
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Highway Safety Manual
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• Examples:
• Kansas DOT predicted the
safety benefits of adding
and extending passing
lanes to portions of US 50
• Illinois DOT used HSM
analysis to help reduce
roadway departure
fatalities by over 30%.
Highway Safety Manual
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• Florida DOT HSM Case Study on S.R. 574 (Tampa, FL)
• Right-of-Way cost savings of $1.6M with 5 lane TWLTL
option instead of raised median… Cost-benefit analysis
revealed that it was worth spending the extra money on
the ‘safer’ design alternative.
Highway Safety Manual
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HSM Tools and resources available for your use:
• Highway Safety Manual website
www.highwaysafetymanual.org
• Interactive Highway Safety Design Model
www.ihsdm.org
• SafetyAnalyst
www.safetyanalyst.org
• Crash Modification Factors Clearinghouse
www.cmfclearinghouse.org
• Training courses available at:
www.nhi.fhwa.dot.gov
www.usroadwaysafety.org
Highway Safety Manual
• Interactive Highway Safety Design Model
is a suite of software analysis tools for evaluating safety and operational effects of geometric
design decisions on highways.
• Consists of six evaluation modules:
• Crash Prediction
• Policy Review
• Design Consistency
• Intersection Review
• Traffic Analysis
• Driver/Vehicle
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IHSDM
Highway Safety Manual
• Interactive Highway Safety Design Model
Sample Output:
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PLANNING
Highway Safety Manual
• Interactive Highway Safety Design Model
Crash Prediction Module Alternatives Analysis:
• Alternative A – widen lanes & add shoulder
• Alternative B – widen lanes, add shoulder, replace comp. curve
• Alternative C – add climbing lane and redesign intersection
• Alternative D – realign by upgrading curves, widen lanes and add shoulders
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Existing A B C D
Total 94.2 80.3 79.1 91.6 77.8
Fatal + Injury 31.0 26.5 26.1 30.1 25.7
Prop. Damage 63.2 53.8 53.0 61.4 52.1
Crash Rate 5.8 5.0 4.9 5.6 4.8
F+I /mile/yr 1.9 1.6 1.6 1.9 1.6
PDO/mile/yr 3.9 3.3 3.3 3.8 3.2
Constr. Costs $0 $1M $1.5M $3M $5M
Bentley MicroStation
• Primary CADD software used at SHA
• Current version for OHD (within the last 6 months)
• V8i Select Series 1 (08.11.07.180)
• Able to export/import AutoCad files
however, intelligence may be lost
• Future Version
• Currently investigating SS3
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Bentley InRoads • Primary Geometric Design package
for SHA
• Current Version • In-Roads V8i Select Series 1 (08.11.07.227)
• Future • Investigating Open Roads (SS3) –
demonstration by Bentley in January
• Other Information • GeoPak still an option for the private sector
• Future of 3D Design is expanding – BIM for Highways
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ProjectWise • File sharing for SHA for internal and
external customers - MTA is also using updated version
• Current Version • Project Wise V8i
• Future Version • Currently evaluating SS4. Preparing to
migrate to new version over next 12 - 24 months.
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SHA CAD Standards • Purpose
• To help maintain consistent CADD files
• Current Use • Original release in 2004. Latest update
is 2/23/11 and is on SHA website.
• MCPC – New update coming to SHA Web – target by end of Feb.
• Future Use • Standards updates will continue once
contract mechanism is available
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Visualization 2D and 3D (Carl)
• To give a representation of what will
exist after the road construction is
completed
• Currently we us ESRI, Microstation,
and Blender products to develop
the Visualizations
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2D Visualization
• Create your limits based on the limits
of the design file
• Clean up the design file displaying
only the Alignment and Shading file
• Import in the 2011 statewide image
service
• Create the standard title block that
has been approved by SHA
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Display Standards Mapping Elements
•Title Block/Border: Light Beige fill- RGB color: 255,245,225; Black border •Title/Subtitle: Arial, black, bold, italicized; Other title block text: Arial black
•Scale or Scale bar: Aerial photography accurate to no less than 100 scale
•Aerial Photography Year: Currently 2011
•North Arrow
•Location Map: Full county with Red location box, main roads, labels
•Legend/Key
•SHA logo: NOT “Driven to Excel”
•Project limits or description as necessary
•Road Names: Text-White, bold, italicized ; MD Road, US Route, or Interstate symbols
Please note: Items on this list may vary with the purpose and needs of individual displays. •Additional Visualization: Photos, Typical Sections, Site Rendering, Tables
•QR Code: http://www.qrstuff.com *If your project is featured on the SHA Projects Web Page please notify the display team so we may generate this link.
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3D Visualization
Microstation & Inroads
• Create Alignments based off of plan sheets
or Microstation files
• Create templates for all proposed
roadways and their variations
• Create surfaces of proposed roadways
• Export surface triangles of proposed
roadways and existing surface
Blender
• Import surface triangles created with InRoads
• Manipulate vertices and edges of all surfaces’ triangles to create a single smooth surface
• Model existing and proposed buildings, utilities, signs, traffic signals, trees and other plants, pavement markings, etc.
• Create textures in Photoshop and apply textures to all triangles of a model
• Create pathways for traffic simulation
• Create intersection traffic patterns and signal timing
• Export all elements of the model as .x files
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SHA 3D Simulation
• Take screenshots for static displays such
as photomatching, or entirely computer
generated images
• Pre-render videos to show at a later
presentation
• Use simulation in real time as part of a
presentation to provide a virtual tour of
proposed project.
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Enterprise GIS (eGIS) • Streamline geospatial information
• Data driven analysis and decision support
• Tell a story and track projects
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eGIS
• 877 internal users
• Over 130 map services
• 84 content themes
• 27 tools
• 15 developers
eGIS • Sample of current data
• Assets
• ADA
• AsBuilts
• NPDES - Stormwater Management
• Structures
• Total Maximum Daily Load (TMDL)
• Plats
• Fund Projects
• Climate Change
• Miss Utility Tickets
• General SHA Data
• How do I get data? • Contact GIS Team through your SHA Project Manager
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GIS Data Download Center
eGIS accessible by Public • Prototype 3/2013
• Estimated Release Summer 2013
• Information Available • HNI, CTP, County Priority
• Bike Projects
• As-Builts
• As determined by SHA Data Owners
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SHA Mobile Web Portal
• Emergency Truck Parking
• Points of Interest
• Bike Projects
SHA Mobile Web Portal
Electronic Bidding • Purpose
• Allow electronic retrieval of construction contract documents and allows for electronic submittal of bids
• Current status • SHA is working with MDOT to bring
electronic bidding to MD.
• Future Use • Will start with a list of pilot projects and
eventually open it up to all contracts
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Contractors Information Center
• Purpose
• Provides information to the contracting
community on SHA construction
contracts
• Current Use
• Internet site – SHA’s Doing Business site
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Contractors Information Center
CIC Mobile
• Android
• iPhone
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