A-Transportation-Safety-Planning-Tool-for-the-City-of-Ames.pdf
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1、A Transportation Safety Planning Tool for the City of Ames Damion Pregitzer dpregitzercity.ames.ia.us Teng Wang wtyliastate.edu 11/6/2009www.InTrans.iastate.edu1 Faculty Advisors: Dr. Nadia Gkritza nadiaiastate.edu Dr. Reg Souleyrette regiastate.edu 11/6/2009www.InTrans.iastate.edu2 City of Ames Pop
2、ulation: 50,731 (Census, 2000) 56,510 (Iowa Data Center, 2008) Area: 21.6 square miles (Census, 2000) MPO: 36 square miles, designated in year 2003 Iowa State University : 27,945 students (as of Fall 2009) 11/6/2009www.InTrans.iastate.edu3 A Transportation Safety Planning Framework 11/6/2009www.InTr
3、ans.iastate.edu4 Study Area /Problem Identification Data Collection PLANSAFE ModelRoad Protection Scores (RPS) Recommendations to the City of Ames Empirical Bayes (EB) Safety Performance Assessment 11/6/2009www.InTrans.iastate.edu5 Data Collection 11/6/2009www.InTrans.iastate.edu6 Data Collection Cr
4、ash Data: 2002 to 2008, statewide geocoded from Iowa DOT Road Network Data: Geographic Information Management System (GIMS) 2008 statewide from Iowa DOT SocioDemographics: Census 2000 Other Local Data: Bus lines, recreation paths, fire station, schools and police stations from City of Ames 11/6/2009
5、www.InTrans.iastate.edu7 Crash Data Geocoded crash points: severity, users, and collision type. 11/6/2009www.InTrans.iastate.edu8 Road Network Data Geocoded road network data: functional class, AADT and segment length. 11/6/2009www.InTrans.iastate.edu9 SocioDemographics Population by census 2000 blo
6、cks Population, housing, children, working adults, population density, etc. 11/6/2009www.InTrans.iastate.edu10 Safety Performance Assessment 11/6/2009www.InTrans.iastate.edu11 Crashes in City of Ames MPO area from 2002 to 2008 Year2002200320042005200620072008Total Ames 100010791114103596310771248751
7、6 Iowa59666594405919258644548156011261194413063 Ames %1.681.821.881.761.761.792.041.82 Crashes in COA from 2002 to 2008 800 900 1000 1100 1200 1300 2002200320042005200620072008 Year Crashes 11/6/2009www.InTrans.iastate.edu12 PLANSAFE Models 11/6/2009www.InTrans.iastate.edu13 P PLANLANS SAFE:AFE: For
8、 forecasting and estimating safety in future due to the effect of sociodemographic changes, traffic demand, road network changes and countermeasures at planning level. NCHRP 0844: Incorporating Safety into LongRange Transportation Planning NCHRP 0844(02): Transportation Safety Planning: Forecasting
9、the Safety Impacts of SocioDemographic Changes and Safety Investments 11/6/2009www.InTrans.iastate.edu14 NCHRP 0844(02): Transportation Safety Planning Forecasting the Safety Impacts of SocioDemographic Changes and Safety Investments There are multiple PLANSAFE models: Total Accident Frequency Model
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