Archived Data Management Systemin Kentucky

Mei Chen, Ph.D.Dept of Civil EngineeringUniversity of Kentucky

November 7, 2003

Background Major ITS deployments in Kentucky

ARTIMIS (The Advanced Regional Traffic Interactive Management and Information System)

82 detectors within KY

Background (cont’d) Major ITS deployments in Kentucky

TRIMARC (Traffic Response and Incident Management Assisting the River Cities)

71 detectors in KY (2003)

Data Collected Volume Speed Occupancy Length-based vehicle classification Incident

Potential Applications Planning

Demand modeling Data reporting Air quality

Operation Performance monitoring Delay management

Safety Speed management

Major Tasks Develop ADMS functional requirement

Data needs survey Develop data archiving algorithm Develop data quality control strategy Develop a user interface for data

query

TRIMARC Data Quality2002 TRIMARC Overall Volume Data Quality

93.0%87.4% 86.4%

80.6%

Completeness percentage % passing quality check(compared to raw data)

% of 15min records used tocalculate hourly volume

% of 15min records used tocalculate daily volume

ARTIMIS Data Quality2002 ARTIMIS Overall Volume Data Quality

19.0%

66.3% 66.3% 64.7%

Completeness percentage % passing quality check(compared to raw data)

% of 15min records used tocalculate hourly volume

% of 15min records used tocalculate daily volume

Traffic Characteristics Speed distribution

TRIMARC: Segment SKYI64003E (I-64E), MP6.7 2 lanes per direction Friday, December 13, 2003

SKYI64003E (MP6.7)

0

1020

3040

5060

70

0:00 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 21:36 0:00

Time

Average spe

ed (m

ph)

Traffic Characteristics (cont’d) Speed – Flow Relationship

TRIMARC: Segment SKYI64003E (I-64E), MP6.7 2 lanes per direction Year 2002: 4-7pm

SKYI64003E (MP6.7)

0102030405060708090

0 500 1000 1500 2000 2500Flow rate (veh phpl)

Aver

age sp

eed

(mph

)

ADMS in Kentucky

Research in Progress…