mta’s accident mapping systemonlinepubs.trb.org/onlinepubs/conferences/2017/... · accident...
TRANSCRIPT
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MTA’s Accident Mapping System
7/28/2017
Leo Fothergill, GIS Project Manager AECOM (consultant to MDOT MTA) Woon Kim, Senior Analyst AAA Foundation for Traffic Safety (former MDOT MTA employee)
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Agenda
Maryland Transit Administration (MTA) Overview Accident Mapping System Need System Features & Functionality Uses/Effectiveness of System Questions/Comments
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Maryland Department of Transportation Maryland Transit Administration
Fourteenth Largest Transit Agency in the US Over 110 Million Passenger Trips Annually
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Accident Mapping System Need Over 700 buses + 38 light rail vehicles + congested
Baltimore City streets Accidents
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Accident Mapping System Need (cont’d)
In 2012 Bus Accident Mapping System was launched to visualize where bus accidents were occurring.
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Accident Mapping System Need (cont’d)
In 2016 Accident Mapping System was launched with various enhancements.
Accident Mapping System
Light Rail & Metro
Accidents/ Incidents
Claims Cost Data
Supervisor Zones
Expanded Data
Querying Interactive Charting
Tool
Export to CSV
Improved Reporting
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Intranet-based web mapping application. Accident Mapping System includes over ten years of
accident GIS data (January 2007 – June 2017) and six months of claims data.
Accident Data Services created using ArcGIS Server. Built using Leaflet js library- flexible, lightweight. D3 used for charts, accident points and clustering. Redux – a data storage/processing library. Optimized for large data sets.
Accident Mapping System
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Accident Mapping System
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Transit Modes – Bus, Light Rail, and/or Metro
Bus Departments – Division or Mobility Provider
Date
Preventability – Preventable and Non-Preventable
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Accident Mapping System (cont’d)
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Accident Codes (Over 200 different codes)
Bus Routes
Bus Model Year Supervisor Zone Keyword
– Using keywords in accident description to query data.
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Accident Mapping System (cont’d)
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Accident Mapping System (cont’d)
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Accident Mapping System (cont’d)
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Dynamic link to Google Street View
Accident Mapping System (cont’d)
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Supervisor Zone Based Clustering
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Color-coded by Mode, Color
intensity shows frequency level
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Mode Selection
Mode specific data layers
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Mode Selection
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Accident Mapping System (cont’d)
Location Specific Reports
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Accident Mapping System (cont’d)
Interactive and compound charting
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Uses/Effectiveness of System
Bus Accidents ‘Hot Spot’ Report & Posters – communicate via
outreach to Bus Divisions and Training Dept. for raising awareness and reducing accidents
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Uses/Effectiveness of System
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Baltimore Fort McHenry Tunnel Toll Plaza
Before (2011 & 2012)
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Uses/Effectiveness of System
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two steel I-beam roof support columns & insufficient
clearance width
133’’─ 124’’= 9’’
Make operators aware of the likelihood of the accident
Alert them to reduce speed upon entering the toll plaza
Restrict them from using narrow lanes
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2
Uses/Effectiveness of System
13 10 2
2013/14 2015/16 2017YTD
After (2017)
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Light Rail Accidents – Collisions along the LR
corridor on Howard St. in CBD of Baltimore City
– Mixed traffic, narrow and one-way roads, high volume of pedestrians, faded lane marking, etc.
– A tool to prioritize the locations for rigorous traffic study and safety assessment
Uses/Effectiveness of System
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Questions/Comments