A systematic approach to identifying traffic safety needs and intervention programs for Indiana : volume II--SNIP2 user manual.

Details

• Creators:
  Tarko, Andrew P. ; Li, Mingyang ; Romero, Mario ;   ; Thomaz, Jose 
• Corporate Creators:
  Purdue University. Joint Transportation Research Program
• Corporate Contributors:
  Indiana. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Accident Prone Locations Benefits Computer Program Documentation Costs Countermeasures Mixed Integer Programming Software Traffic Accidents Traffic Safety
• Publication/ Report Number:
  FHWA/IN/JTRP-2014/04 
• Resource Type:
  Tech Report
• Geographical Coverage:
  Indiana
• Corporate Publisher:
  Purdue University. Joint Transportation Research Program
• Abstract:
  This report presents the results of JTRP Project “A Systematic Approach of Identifying Safety Intervention Programs for Indiana (SNIP2),” 
  
  which  aimed to develop  SNIP2 to support  identification of roads that have excessive  crashes of the types defined by the user. In 
  
  addition, this tool is capable of selecting the best combination of high‐crash roads and relevant safety interventions that maximizes the 
  
  safety benefits and keeps the total cost within the budget and other user‐defined constraints. 
  
   
  
  Unlike other studies considering the implementation time of safety projects, the optimization objective of SNIP2 is to identify an optimal 
  
  combination of countermeasures renewable within a long time horizon. This simplification is accomplished by representing the projects 
  
  through their annualized costs and benefits. It allows consideration of many projects for large road networks and it makes the SNIP2 
  
  suitable for identification of safety focus areas in strategic safety plans. The SNIP optimizer – a heuristic approximation of a large‐size 
  
  mixed integer knapsack problem based on a greedy search was extensively tested and evaluated. It was found producing optimal or 
  
  near‐optimal solutions in a sufficiently short time. Another research result is a comprehensive catalog of countermeasures for Indiana – 
  
  a list of countermeasure names, road and crash conditions for the countermeasure relevance, corresponding crash modification factors, 
  
  and countermeasure costs. 
  
   
  
  The SNIP2 is computer software developed with close collaboration with the INDOT future users. It includes an updated crash and state 
  
  road database. A user’s manual describes on the necessary details of the software and various aspects of its use. Two example studies 
  
  are also included in the manual to illustrate its use and to better presents the SNIP2 features. 
  
  
• Format:
  PDF
• Funding:
  SPR-3616
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:b3739896af1f3779f33e962f9967f51e7e56a7fc084df09c340d597721466175
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28393/dot_28393_DS1.pdf
• File Type:
  [PDF - 25.10 MB ]