fhwa - pooled funds speed summit by: kurt matias february 23, 2010 [email protected]
TRANSCRIPT
Why Join a Pooled Fund?Allows for larger studiesAllows for multi-State collaborationHelps States avoid paying large amounts of money for
quality research resultsFacilitates improvement within the State-of-the Practice
where States need it mostNY joined these studies using Research Bureau money
FHWA Pooled FundNon-Intrusive Technologies Phase III
TPF – 5(171)Began January 2009Lead State – Minn DOTSRF Consulting awarded RFP bidCurrent list of Study Partners: NY, CT, FL, GA, HI, IA, ID, IL,
MN, MS, MT, OH, and TX
NIT Phase III - GoalsEstablish Ground Truth for Data CollectionDetermine NIT Equipment Installation LimitationsMeasure Sensor Technology AccuraciesMeasure Limitations of NIT devices
LightingOcclusionWeather
Improve accuracy of NIT devices
NIT Phase III – ScheduleTAC Met for Kick-Off Meeting at Minn DOT – April 2009 Ground Truthing – October 2009Field Work November 2009 – May 2010Final Report Due – June 2010Phase I and II Reports Available Online –
Phase Ihttp://www.dot.state.mn.us/guidestar/1996_2000/nit1.htmlPhase IIhttp://www.dot.state.mn.us/guidestar/2001_2005/nit2.html
NIT Phase III – Pooled FundCurrent Funding (limited) – $195,000Current list of Sensors to be included in the study:
Axle Light – Peek TrafficTIRTL – Control Specialists CompanyWavetronix – Smart Sensor HDMicroloop – Global Traffic TechnologyMio Vision – Video Collection Unit
NIT Pooled Fund in ActionResearch Implementation:
Comprehensive results using the same testing methods for all sensors:Ground truth resultsVarious test environments – high volume, low
volume, and varied weather conditionsState DOT’s will have improved knowledge of each
tested sensor and can better use each technology Known sensor features and limitationsImproved methods for traffic data collection using NIT
FHWA Pooled FundLoop/Length Based Vehicle ClassificationTPF – 5(192)Started January 2009Lead State – Minn DOTConsultant Contractor – SRF ConsultingStudy Partners: NY, AK, CT, FL, ID, IL, MI, MN, OH, PA, TX,
WA, WI and WY
L/LBVC - GoalsEstablish loop specifications for optimum length based
accuracyDetermine number of length bins and sizes that will work
with different technologies across different StatesResearch Tasks:
Loop size, shape, installation techniques…Optimization of length bins – number and vehicle sizeDetermine the accuracy of LBVCFind causes of inaccuracies and methods to avoid themTesting some non-loop based equipment
L/LBVC - ScheduleTAC Met for Kick-Off Meeting at Minn DOT – April 2009RFP bid awarded to SRF Consultants – October 2009Literature review – November 2009 to May 2010Meeting at NATMEC – June 2010Field installations and data collection – 2011Study completed – June 2012
L/LBVC - Pooled FundCurrent Funding (limited) - $425,000Expected Results:
Establish best loop installation practices to improve length based classification measurements
Define number of bins and the thresholds for each bin to make length based data transportable between technologies, vendors and States
Determine the length based accuracy for various technologies
Determine the criteria to obtain the best possible length based measurements
L/LBVC Pooled Fund in ActionResearch implementation:
Establish standard for number and size of each length binDetermine the accuracy of length based measurements
and what methods will improve resultsDetermine the optimum loop layout that will lead to
improved accuracy and better length based data
FHWASpeed Data Summit Meeting18 states participated: PA, GA, CA, MT, AZ, ID, OH, MN,
TX, VA, IN, NY, ME, FL, WA, CO, WA, and MDIncluding FHWA, CUTR, and Federal Safety folks
Summit kick-off held at CUTR in Tampa, FL on Nov. 3-4Discussed some states speed data programs (FL, NY, OH
and PA):Collect data by direction/laneBinning schemesReporting methods
Speed Summit in Action Consensus on common database structure to collect and
store speed data:By laneEvery 15 minutes (preferred) every hour acceptableIn 5 MPH binsFirst bin ≤ 20 MPHReport in 5 MPH incrementsLast bin at least 85+ MPHIdentify count location by Lat/Long
Speed Data SummitImplementation:
Draft Speed Data chapter for the TMG – February 2010Collect speed data from a few participating statesContinue to Develop and refine Speed Data QC checksAdd speed data requirement to TMGTMAS (Travel Monitoring Analysis System ) 3.0 will
require states submit speed data via the web to FHWA
Thank You!!!For Additional Information Contact:
Federal Highway Administration
Steven Jessberger – Pooled Funds202-366-5052
Harshad Desai – Speed Summit404-562-3576