RIDOT S Statewide Roadway and Asset Data Collection Project
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1 RIDOT S Statewide Roadway and Asset Data Collection Project GIS-T Conference 2017 Shane White Rhode Island DOT; Daniel Behnke DTS Accent image here Primary Image here
2 RDIP Technical Assistance Started with Update to RI Strategic Highway Safety Plan (SHSP) SHSP Update Process Identified Lack of Data Integration as Major Factor Contributing to a Incomplete Picture on Traffic Safety in RI Built upon CDIP that RIDOT participated in 2013 Workshop and Roundtables conducted June 2014 Workshop included Statewide and RIDOT Planning (Asset Management and GIS), Infrastructure Development, and Several Municipalities
3 Why Do We Need This Data? Identify risk factors From crash data From roadway data From other studies Intersection Features: Intersection skew angle Intersection traffic control device Number of signal heads vs. number of lanes Presence of backplates Presence of advanced warning signs Intersection located in/near horizontal curve Presence of left-turn or right-turn lanes Left-turn phasing Allowance of right-turn-on-red Roadway Features: Number of lanes Lane width Shoulder surface width/type Median width/type Horizontal curvature Roadside or edge hazard rating Driveway density Presence of shoulder or centerline rumble strips Presence of lighting Presence of on-street parking Pedestrian Features: Crosswalk presence Crossing distance Signal head type Adjacent land uses Lighting
4 RIDOT developing local safety program Allocate funding annually for local safety improvement projects Proposal forms reviewed on quarterly basis Proposals scored and ranked based on safety benefit, alignment with RIDOT s goals and objectives, and cost. For state roads, RIDOT will fund and administer design and construction, depending of resources. For local roads, funding will be distributed to municipality to administer design and construction.
5 HSIP Proposal Scoring Safety Benefit/Cost Ratio Analysis Fatality/Serious Injury Reduction Systemic versus Spot RSA performed during diagnosis (multi-disciplinary team) Implementation of Enforcement and Education countermeasures Participation in Roadway Data Program
6 RDIP Current Data Management and Practices
7 RDIP Moving Forward/Recommendations RIDOT Key Business Systems Integrated
8 RDIP Moving Forward/Recommendations (Cont d) Kudos RIDOT is setting a significant benchmark across the nation with its planned effort to not just collect the FDEs, but nearly all MIRE elements including FDEs for all public roadways Enable RIDOT to Perform Advanced Safety Analyses Across Entire Public Road System: 2,050 Miles (32%) State Roads 4,450 Miles (68%) Local Roads 16,200 Intersections 445 Ramps Key Recommendations 1. Develop Centralized Process for Updating Roadway Data Elements for State Maintained System 2. Assess Needs of the Asset Management Unit to Manage Data 3. Develop Process for Maintaining Data Elements for Local System
9 What is MIRE? Recommended Listing of Roadway and Traffic Inventory Elements Guideline for Agencies Critical to Safety Management Helps Move Agencies Towards Use of Performance Measures Benefits Beyond Safety Decision Makers Asset Management Infrastructure Operations Maintenance
10 MIRE Across Datasets
11 Type of Data in MIRE Segment Location / Linkage Elements Street Name, Route Number, Town Code, Etc. Segment Classification Functional Class, Rural / Urban, Etc. Segment Cross Section Surface Descriptors Surface Type, Pavement Condition, Etc. Lane Descriptors Number of Lanes, Cross Slope. Etc. Shoulder Shoulder Type, Sidewalk Presence, Etc. Median Median Type, Side Slope, Etc. Roadside Clear Zone, Driveway Count, Etc.
12 Type of Data in MIRE Segment Traffic Operations / Control Data One/Two Way, Speed Limit, Roadway Lighting, Etc. Horizontal Curve Data Curve Degrees, Curve Length Vertical Grade Roadway Junction Descriptors (Intersections) General Descriptors Type of Intersection, Number of Legs, Signal Presence, Etc Each Approach Through Lanes, Median Type, Crosswalk Presence, Etc. Interchange and Ramps Descriptors Interchange Type, Number of Lanes, Speed
13 MIRE Data Collection Effort Timeline Scope of Work June 2013 RFP Completed May 2014 NTP September 2014 Data Collection Completed December 2015 Completing QA/QC Process Now Beginning to use the data to perform predictive safety analysis, particularly on corridors Scope of Work Collect 180 of 202 MIRE Elements Traffic Volume Related Elements Not Collected (79-90, , 160, , 184, ) Also Responsible for Collecting ROW Imagery, Pavement Roughness & Distress Data, LIDAR, and Additional Asset Data
14 Asset Data Collected Pavement Roughness, Rutting, Patching, Bleeding Collected on State, NHS, Numbered Routes, Ramp, Municipal Federal Aid Mobile LiDAR for 1300 Miles of State Road and Some Ramps ROW Imagery for State Roads Asset Features Statewide Road Inventory Signs State Roads Guardrail Walls Catch Basins and Manholes Striping Bridge Vertical Clearance
15 MIRE Data Collection Effort (Cont d) Actual Cost $750,000 MIRE $100,000 - ROW Imagery $350,000 Pavement Data Collection Cost Estimation 38 FDE s Required by MAP-21 - $750,000 High Priority Elements (FDE s Plus Elements Deemed High Priority ) - $1,200,000 All MIRE Elements - $3,600,000 (Does Not Include Traffic Data Collection) Costs Assumed Combination of Remote Imagery (e.g. Google Earth, RIGIS), and Instrumented Van Technology
16 Cost Estimation (Cont d) MIRE Element FDE >400 FDE <400 RIDOT Priority Data Type/Collection Methodology I. Roadway Segment Descriptors I.a. Segment Location/Linkage Elements 1 County Name (HPMS FE) 1 admin Have 2 County Code (HPMS FE) 1 admin Have 3 Highway District 1 admin admin 4Type of Governmental Ownership (HPMS FE) x x 1 admin Have 5 Specific Governmental Ownership 1 admin admin 6 City/Local Jurisdiction Name 1 admin admin 7City/Local Jurisdiction Urban Code 1 admin admin 8 Route Number (HPMS FE) x 1 admin admin 9 Route/Street Name (HPMS FE) x 1 admin Have 10 Begin Point Segment Descriptor (HPMS FE) x x 1 admin Have 11 End point Segment Descriptors (HPMS FE) x x 1 admin Have 12 Segment Identifier (HPMS FE) x x 1 admin Have 13 Segment Length (HPMS FE) x 1 admin Have 14 Route Signing (HPMS FE) 1 admin admin 15 Route Signing Qualifier (HPMS FE) 1 admin admin 16Coinciding Route Indicator 1 admin admin Basis of cost estimates Per element cost (where available) Comment 17 Coinciding Route Minor Route Information 1 admin admin 18 Direction of Inventory x 1 admin admin I.b. Segment Classification 19 Functional Class (HPMS FE) x x 1 admin Have 20 Rural/Urban Designation (HPMS FE) x x 1 admin Have 21 Federal Aid/ Route Type (HPMS FE) x 1 admin Have 22 Access Control (HPMS FE) x 1 admin admin I.c. Segment Cross Section I.c.1. Surface Descriptors 23 Surface Type x x 1 imagery, van Utah $26/mile for group 2.1 Roadway Condition Data - IRI 24 Total Paved Surface Width 1 imagery, van Utah $7/mile 4.4 Roadway Asset Data - Surface Areas 25Surface Friction 2 skid trailer previous experience $150/mile 26 Surface Friction Date 2 admin admin 27 Pavement Roughness/Condition (HPMS FE) 1 van Utah $26/mile for group 2.1 Roadway Condition Data - IRI 28 Pavement Roughness Date (HPMS FE) 1 admin admin Pavement Condition (Present Serviceability 29 Rating) Only need if you don t have IRI 30 Pavement Condition (PSR) Date Only need if you don t have IRI I.c.2. Lane Descriptors 31Number Of Through Lanes (HPMS FE) x x 1 imagery, van Utah $7/mile 4.1 Roadway Asset Data - Number and Length of Lanes 32 Outside Through Lane Width 1 imagery, van Utah $7/mile 4.4 Roadway Asset Data - Surface Areas 33 Inside Through Lane Width 1 imagery, van Utah $7/mile 4.4 Roadway Asset Data - Surface Areas 34 Cross Slope 1 imagery, van Utah $26/mile for group 2.5 Roadway Condition Data - Roadway Geometry
17 Data Integration and Governance Data Integration Through ESRI Roads & Highway Implementation Conversion From Multiple LRSs Supporting Various Business Systems to a Unified LRS Platform (While Supporting Multiple LRMS) Supporting Bi-Directional Data Flow and Consistent Location Referencing Across Business Systems Rhode Island Local/State Data Integration For Asset Management and Safety Analysis In Progress Develop processes and identify staffing and resources needed to guarantee the ongoing maintenance and utility of the roadway location and MIRE inventory data Manage data integration and assist the RIDOT in developing processes for integration of the new MIRE data into ESRI Roads and Highways Support use of advanced analytic tools/methodologies through example analyses and training on data extraction/integration processes
18 Automated Sync ing of Business Systems with LRS Business systems Web Service Connections extend access to data inside/ outside the organization, providing access to local & regional government Web services communicate the last synchronization date Web services communicate route and measure changes to business records Local & regional government can participate in the maintenance of the database Rules define how events are updated LRS Change LRS Editor Geodatabase All edit activities are time stamped and stored
19 Roadway Characteristics Editor (RCE) Roads & Highways Road Characteristic Editor (RCE) provides a web portal that can be configured to provide access to local/regional government Local & regional government can actively participate in the maintenance of the road network
20 Data Model MIRE has no standardized data model, only guidance Wanted something basic that could be improved upon Needed something that could easily be edited and moved to various formats
21 Data Collection MAC vehicles collect data along predefined routes Directionality important consideration Mutliple datasets with differing priority levels GPS tracks used to track collection
22 Data Population Data from various sources Aerial imagery ROW imagery (collected by MAC vehicles) LiDAR Existing RIDOT data
23 Data Population
24 Data Population Data populated at 1/10 th of a mile segments Coded domain values used Populated specifically based on type of roadway elements
25 Curves Biggest hurdle with data New process that seemed to have never been done before. Developed Python scripts to detect curves Scripts use point data created from LRS to determine curve start/end measures, length, and radius of curve
26 QC Before Delivery to RIDOT Initial QC performed by Michael Baker Manual and Automated QC performed Mainline 86,522 segments, 6,932 miles, 120 MIRE Elements Intersections 16,215 intersections, 49,337 intersections approaches, 57 Elements Ramps 444 ramps, 25 Elements
27 QC Before Delivery to RIDOT Manual processes used to QC data using symbology Find areas where symbology differs, and could potentially be errors Applied to attributes such as speed limit, sidewalk presence, median information, etc. Reports delivered in the form of word documents describing issue with screen captures for specific Segment IDs Automated processes Scripts built for cross attribute validation and domain validation Applied to all datasets Validation rules developed based on MIRE guidelines 80 cross attribute validations 90 domain validations Reports delivered to DTS in the form of CSV files with issues listed by Segment ID
28 Lessons Learned/Challenges No standard data model for MIRE Had to develop data model Numerous iterations to work out best geometric and attribute representations Built GDB with domains for all MIRE Elements that could be coded DOTs vs Consulting Managing expectations Keeping all participants up-to-date on project status LRS updates during project
29 Lessons Learned/Challenges (Cont d) FHWA should develop a geospatial data model for use by any agency interested in implementing MIRE. The data model should template GIS feature classes, attribute domains within each feature class, and necessary relationship classes between features. A substantial amount of time was spent by the MIRE Contractor developing a GIS data model to house the MIRE data collection. MIRE Contractor identified the need for additional details for each MIRE element to be located in a single reference document. Although safety engineers are the primarily consumers of the MIRE data, data collection Contractors are more likely to be experts in GIS or mobile data collection technology, without in-depth knowledge of each MIRE element.
30 Lessons Learned/Challenges (Cont d) Require Contractors to document and submit their data collection methodology prior to collecting data. For each MIRE element: Define the element and the attribute type (alpha-numeric, string, integer, double) Identify the source data (Existing GIS, Aerial Photography, ROW Imaging, LiDAR, etc.) Define the process used to extract the element (field calculation, onscreen measurement/count, automated from mobile data collection vehicle) Expected accuracy
31 Lessons Learned/Challenges (Cont d) MIRE junction elements are split between two types of geometry: A point feature with attributes describing the intersection; 3 or more linear features representing the intersection approaches. Each intersection represented as a point with attributes describing the intersection. Intersection approach elements stored in a Related Table and linked to the intersection point based on the intersection identifier. MIRE does not require the intersection approach to be linked to the road segment ID, only the intersection ID. Poses a problem when implementing Safety Analyst and linking crash data to segments and approaches.
32 Moving Forward MIRE Road Inventory to be Imported into Esri Roads & Highways and Managed as part of RIDOT s LRS MIRE elements will be dissolved from 1/10 mile centerline segments into LRS routes with event tables Develop Geoprocessing Tools to Extract Data from Esri Roads & Highways for import into Safety Analyst Safety Analyst will not work with the Esri Roads & Highways event tables Additional data fields (processed from existing attributes) required for import to Safety Analyst MIRE Element Attribute Definitions differ from Safety Analyst Requirements Two Options: Manually attribute map the MIRE attribute definitions within Safety Analyst as part of the data import process Translate MIRE attributes to Safety Analyst definitions through scripting outside of Safety Analyst
33 Sample list of common data elements that may need updating Street name Pavement Surface Type/Width/Condition Lane & Shoulder Type/Width Number of through/left turn/right turn/aux lanes Bike facility (shard lane, bike lane, bike path) Sidewalk Type/Presence Curb Type/Presence Median Type/Presence/Width Driveway (residential and commercial) Count Intersection Control (signalized, stop, uncontrolled, pedestrian) Speed Limits On-Street Parking School Zones Crosswalk Lighting Pavement Markings Rumble Strips Passing Zones
34 Comments & Questions
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