In the following, we are trying to gather information from you in order to conduct the technical analysis of the feasibility of installing ramp metering at a specific on-ramp. The analysis consists of specific analyses on congestion crashes, and geometrics. Please answer ALL the questions. For questions that you are not exactly sure, please provide the best estimates. The expert system will provide a separate score for each of the congestion, crash, and geometrics analyses. The overall score for this technical analisis will be a weighted average of the three individual analyses.

Right-most lane volume (vph, must be in the range 0-2200) : what's that?

Ramp volume (vph, must be in the range 0-2200) : what's that?
On-ramp truck volume percentage (%, must be in the range 0-100) : what's that?
Does a bottleneck exist downstream of the on-ramp? what's that?
If yes, is the bottleneck mainly due to the on-ramp merge? what's that?
Average vehicle length (ft, default = 15 ft, must be in the range 5-100) : what's that?
Total # of Crashes (per million VMT, must be in the range 0.0-10000.0) : what's that?
# of fatality ONLY crashes (per million VMT, must be in the range 0.0-10000.0) : what's that?
# of injury ONLY crashes (per million VMT, must be in the range 0.0-10000.0) : what's that?
# of property damage ONLY crashes (per million VMT, must be in the range 0.0 -10000.0) : what's that?
Mainline acceleration lane length (ft, must be in the range 10.0-20000.0) : what's that?
Length of on-ramp storage (primary queue) lane (ft, must be in the range 10-20000) : what's that?
# of onramp lanes (must be in the range 1-4) : what's that?
Ramp grade (%, must be in the range 0-100) : what's that?
Does HOV lane need to be built? what's that?
Does enforcement area need to be built? what's that?
If yes, can the enforcement area be built? what's that?
Is mainline detector available? what's that?
Is communication with TMC available? what's that?
Can mainline acceleration lane be extended? what's that?
Can the on-ramp storage (primamry queue) lane be extended? what's that?
Is the meter to be installed in Los Angeles of California (District 7) ? what's that?

                     


In the following, we are trying to gather information from you in order to conduct the institutional analysis of the feasibility of installing ramp metering at a specific on-ramp. For each of the questions, please provide a score with 1 for absolutely no or unsure and 5 for absolutely yes or sure. You may skip certain questions by clicking the "Skip" button; however, this will reduce the relevance of the results the expert system produces for the institutional analysis.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


               

 

 

 


 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

               


   
   
   
   
 
   

This analysis is to perform the benefit/costs analysis to assess if building the meter is cost effective.
Note that the analysis here is rather high level and rough, just to give some general ideas to users of the potential benefits and costs of installing a meter. Detailed benefits and costs analysis can be performed later once users decide that ramp meter is going to be installed.