DESIRABILITY RATING AND ROUTE SELECTION

AN ATTEMPT IS MADE TO QUANTIFY THE AESTHETIC, THE SOCIAL AND THE NEIGHBORHOOD ECONOMIC EFFECTS OF A PROPOSED HIGHWAY ON THE AREA IT SERVES, AND TO RELATE THOSE EFFECTS TO COST AND SERVICE CONSIDERATIONS SO THAT RATIONAL SYSTEMATIC COMPARISONS OF ALTERNATE ROUTES CAN BE MADE. THE SELECTION OF A ROUTE AND THE DESIGN CAN THEN BE BASED ON A CONSIDERATION OF ALL EFFECTS ENVIRONMENTAL AS WELL AS COST AND SERVICE. A BACKGROUND IS BRIEFLY PRESENTED OF SOCIOLOGICAL AND ECONOMIC RATING. FROM THESE RATINGS, THE ENVIRONMENTAL DESIRABILITY OF ALTERNATE ROUTE LOCATIONS AND VARIOUS DESIGNS ON ANY ONE LOCATIONS ARE DETERMINED. A FORM AND PROCEDURE WAS DEVISED FOR ROUTE COMPARISON CLASSIFYING ALL CONSIDERATIONS UNDER THE FOLLOWING HEADINGS: FIXED VALUE, MONETARY, AND DESIRABILITY. THE FIXED VALUE CONSIDERATIONS ARE ADMINISTRATIVE CONSIDERATIONS THAT MAY OR MAY NOT INFLUENCE THE SELECTION OR DESIGN. THE MONETARY CONSIDERATIONS ARE THE USUAL ENGINEERING DETERMINATIONS FOR ALL HIGHWAY PROJECTS AND INCLUDE THE BENEFIT-COST RATIO. WHEN THESE TWO SECTIONS ARE COMPLETED, THE DECISION AS TO THE BEST CHOICE OF ROUTE MAY BE APPARENT. HOWEVER, BECAUSE OF CONFLICTING OPINIONS AND INTERESTS, FURTHER QUANTIFICATION IN TERMS OF A COMPOSITE RATING MAY BE DESIRABLE. FOR THAT REASON, A DESIRABILITY COST RATIO IS CONSIDERED. A DESIRE-COST RATIO AND FEASIBILITY RATIO ARE SUGGESTED AS DEVICES FOR USING INFORMATION AND PRESENTING IT IN AN ORGANIZED MANNER FOR COMPARISON PURPOSES. THE DESIRE-COST RATIO IS A NUMERICAL EXPRESSION OF THE EXPRESSION OF THE RELATIONSHIP BETWEEN THE RATED DESIRABILITIES OF PROPOSED ROUTES AND THEIR ANNUAL COST JUST AS THE BENEFIT-COST RATIO EXPRESSES THE RELATIONSHIP BETWEEN MONETARY BENEFITS AND COSTS. THE PROCEDURE WILL: (1) GIVE A NUMERICAL EXPRESSION OF DESIRABILITY AND FEASIBILITY, (2) ENSURE A THOROUGH CONSIDERATION OF ALL DESIRABILITY FEATURES AND PROVIDE EVIDENCE OF SUCH CONSIDERATIONS AND (3) INVOKE PUBLIC INVOLVEMENT IN THE DECISION MAKING PROCESS BECAUSE THE EVALUATION OF DESIRABILITY REQUIRES PUBLIC REACTION, AND THIS PAYS OFF IN BENEFICIAL PUBLIC RELATIONS THAT ARE REFLECTED POLITICALLY AND DURING HEARINGS.

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 16-25
  • Monograph Title: Socioeconomic considerations in transportation planning
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00200402
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 21 1970 12:00AM