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FHWA > TPM > Resources > Evaluation and Economic Investment > HERS-ST Example - Interpreting the HERS-ST Section Output

HERS-ST Example - Interpreting the HERS-ST Section Output

Objective: Gain a better understanding of the HERS-ST section output.

Tasks:

  1. section output format;
  2. section characteristics;
  3. implemented improvements;
  4. characteristics at end of funding period; and
  5. costs and benefits.

Task 1: Section Output Format

Field Column Heading Data Type Notes
Section Identification 1. Record number RECNO I  
2. County code CNTY I  
3. Section identification SECID A  
4. Sample identifier SAMPID A  
5. LRS identification LRSID A  
6. LRS beginning point BEGMP F  
7. LRS ending point ENDMP F  
Section Characteristics 8. PSR PSR0 F PSR at beginning of funding period
9. Volume/Capacity ratio VCR0 F VCR at end of FP if no improvements are implemented
10. Lane width LW0 I  
11. Shoulder type SHLT0 I  
12. Right shoulder width RSHLW0 I  
13. Horizontal alignment adequacy HORA0 I  
14. Vertical alignment adequacy VERA0 I  
Improvement 15. Improvement type ITYPE I  
16. Lanes added LADD I  
17. Increase in capacity CAPINC F  
18. Type of selection TYPSEL I  
19. BCR BCR F Discounted total benefits / total initial cost
Characteristics at end of FP 20. Volume/Capacity ratio VCR F  
21. Average speed AES F  
22. PSR PSR F  
23. IRI (inches/mile) IRI F  
24. Total lanes TLAN I May be less than sum of peak and off-peak lanes
25. Peak lanes - peak direction PLAN I Includes restricted lanes or shoulders used during peak
26. Peak lanes - opposite direction CPLAN I  
27. Peak capacity - peak direction PCAP F  
28. Peak capacity - opposite direction CPCAP F  
29. Off-peak capacity OPCAP F  
30. Access control ACCESS I  
31. Lane width LWID I  
32. Shoulder type SHLT I  
33. Right shoulder width RSHLW I  
34. Median type MEDT I  
35. Median width MEDW I  
36. Widening feasibility WFEAS I  
37. Horizontal alignment adequacy HORA I  
38. Vertical alignment adequacy VERA I  
39. AADT AADT F  
40. Emissions costs EMC F  
Costs and Benefits 41. Improvement cost IMPC F Total initial cost
42. Emissions benefits EMB F Last year of funding period
43. Travel-time benefits TTB F Last year of funding period
44. Operating-cost benefits OPCB F Last year of funding period
45. Safety benefits SAFB F Last year of funding period
46. Total benefits TOTB F Last year of funding period
State Control Field 47. State control field SCF A  

Task 2: Section Characteristics

HERS-ST Screen Shot: Application Window - showing initial section characteristics, click for column headers Step 1 select results tab.  Step 2 select section conditions.  Step 3 select funding period. Step 4 scroll right

Task 3: Implemented Improvements

HERS-ST Screen Shot: Application Window - showing section improvements, click for column headers and I type

Task 4: Characteristics at End of Funding Period

HERS-ST Screen Shot: Application Window - showing section characteristics at the end of the funding period, click for column headers

Task 5: Costs and Benefits

HERS-ST Screen Shot: Application Window - showing the benefits and costs of section improvements, click for column headers
Updated: 02/11/2013