ITE District 6 June 27, 2006 Incorporating Incident Data into a Freeway Data Archive for Improved Performance Measurement ITE District 6 June 27, 2006 Suman Tasnim, Robert L. Bertini, Kristin A. Tufte Jessica Potter Computer Science Undergrad ITS Lab Portland State University

ITE District 6 June 27, 2006 PORTAL Website

ITE District 6 June 27, 2006 Objective Incorporate incident data into PORTAL PORTAL: Portland Oregon Regional Transportation Archive Listing –US DOT ADUS framework –Archives 20-second speed, occupancy, volume data for Portland, OR area freeways –Begun July 2004, 502 inductive loop detectors in the Portland Metro area –Also archive: weather, traffic counts, bus AVL data coming soon Why incident data? –20,000 reported incidents/year in the Portland, OR area –Improve incident response & more accurate performance measures

ITE District 6 June 27, 2006 Incident Data Description Incident data from ODOT ATMS (Advanced Transportation Management Systems) Database 139,484 incidents from July 30, 1999 – Dec 31, 2005 Data entered by operators at the ODOT TMOC (Traffic Management Operations Center)

ITE District 6 June 27, 2006 Portland Metro / ODOT Region 1

ITE District 6 June 27, 2006 Life of an Incident Incident Occurs Incident Reported Incident Confirmed Dispatch Response Incident Cleared Reported as Cleared Congestion Ends

ITE District 6 June 27, 2006 Example Entries for One Incident Operators make many entries per incident Each entry has 92 fields –Primary Route, Confirm Time, Incident Type (crash, debris, stall, etc.) On average 4.1 entries per incident IdLanes Affected Confirm Time Last Update Time Primary Route Direc- tion Police Response :05:05 I :05: :08:23 I :05: :10:15 I-20511

ITE District 6 June 27, 2006 Example Entries for One Incident Resulting Incident Record: IdLanes Affected DurationHighway IdPolice Response :1031 IdLanes Affected Confirm Time Last Update Time Primary Route Direc -tion Police Response :05:05 I :05: :08:23 I :05: :10:15 I-20511

ITE District 6 June 27, 2006 Data Cleaning Challenges Many different names for a freeway –i205, i-205, I205, I-205, 205 Many different ways to specify location on freeway. –Milepost (3%) –Geolocated (19%) –Landmark in location comments –Exit Name –Street nearby that is not an exit –Bridge name –No Specification

ITE District 6 June 27, 2006 Cleaning Process Multiple Entries  Single Record –Duration derived from “confirm time” and “last update time” –Final record reflects highest severity during the incident –Highway ID derived from “primary route” and “direction id” –Flags in incident record indicate if a particular action occurred at any time during an incident –UTLFlag derived from comment field

ITE District 6 June 27, 2006 Incident Data Analysis PORTAL –Volume –Speed –Occupancy –Weather Incident Data Cleaning Result –Traffic analysis –Duration analysis –Incidents compared with VMT and VHT –On-the-fly graphs

ITE District 6 June 27, 2006 Speed Contour Map I-205 NB Just South of Hwy 212 Milepost Highway I-205 Northspeed 00:00 04:00 08:00 12:00 16:00 20:00 00:00 Time Data Provided by Oregon DOT

ITE District 6 June 27, 2006 Incidents By Type and Number of Lanes ( ) N=120,819N=116,233* *incidents with complete lane location data

ITE District 6 June 27, 2006 Incidents by Location ( ) N=120,819

ITE District 6 June 27, 2006 Incident Tree (2005) N = * In-Lane 37.3% Shoulder 62.7% Crash 41.1% Stall 58.9% Crash 10.3% Stall 89.7% One Lane 71.8% Multi-Lane 28.2% One Lane 98.8% Multi-Lane 1.2% * Incidents with complete lane location data

ITE District 6 June 27, 2006 Crashes and Precipitation (2005)

ITE District 6 June 27, 2006 Incident Statistics ( )* HighwayFull Length Incidents/ Mile/Day Monitored Length Incidents/VMT (x10 -6 )** I-5 NB I-5 SB NB SB OR 217N *Selected highways; table includes located incidents only **2005 incidents only, Incidents reported on Full Length, VMT calculated on Monitored Length

ITE District 6 June 27, 2006 Incidents and VMT by Month ( )

ITE District 6 June 27, 2006 Incidents by Hour and Type ( ) Hour of Day Number of Incidents

ITE District 6 June 27, 2006 Conclusion & Future Work Incident data cleaning –Start with multiple entries –Condense to one record Data analysis with clean data Incorporate into PORTAL

ITE District 6 June 27, 2006 Acknowledgements ODOT –Hau Hagedorn –Jack Marchant PORTAL Team National Science Foundation

ITE District 6 June 27, 2006 PORTAL Website

ITE District 6 June 27, 2006 Thank You

ITE District 6 June 27, 2006 EXTRAS

ITE District 6 June 27, 2006 Incident Statistics ( )* HighwayFull LenInc/Mile/DayMonitored LenIncidents/VMT** I-5 NB I-5 SB NB SB I-84 EB I-84 WB US 26 EB US 26 WB I-405N I-405S OR 217N OR 217S *Table includes located incidents only *2005 incidents only, VMT is x10^-6