Hawaii 2007 Five Percent Report

This report is in response to the Federal requirement that each state describe at least 5 percent of its locations currently exhibiting the most severe highway safety needs, in accordance with Sections 148(c)(1)(D) and 148(g)(3)(A), of Title 23, United States Code. Each state's report is to include potential remedies to the hazardous locations identified; estimated costs of the remedies; and impediments to implementation of the remedies other than costs. The reports included on this web site represent a variety of methods utilized and various degrees of road coverage. Therefore, this report cannot be compared with the other reports included on this Web site.

Protection from Discovery and Admission into Evidence—Under 23 U.S.C. 148(g)(4) information collected or compiled for any purpose directly relating to this report shall not be subject to discovery or admitted into evidence in a Federal or State court proceeding or considered for other purposes in any action for damages arising from any occurrence at a location identified or addressed in the reports.

Additional information, including the specific legislative requirements, can be found in the guidance provided by the Federal Highway Administration,
http://safety.fhwa.dot.gov/safetealu/fiveguidance.htm.

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STATE OF HAWAII
DEPARTMENT OF TRANSPORTATION
HIGHWAYS DIVISION
TRAFFIC BRANCH

STATE OF HAWAII
2007 "5 PERCENT REPORT"
23 U.S.C. 148(c)(1)(D)

1. Identification and Explanation of 5% Locations

   The State of Hawaii does not have mileposts for every public road. This report will address the locations on routes where mileposts are provided.

   HDOT compiled statewide listings for high accident intersection and segment locations.

   1. The statewide intersection listing includes only intersections on the State Highway System. County intersections were not included in this listing due to lack of volume counts for county roadways. The locations need to meet the criteria of three (3) accidents per year for each consecutive year for three (3) years. The number-rate method is used to rank the locations. The intersection rate is calculated by the following:

      Intersection accident rate. The number of accidents per million vehicles.

      Y = number of years
      A = number of crashes in Y years
      ADT = total Average Daily Traffic entering intersection
      Rate = A / [ (ADT*Y*365) / 1,000,000 ]

      Using the latest complete three (3) years of data, 101 intersections in the State of Hawaii met the criteria. 5% of 101 is 5.05 locations. For 2007 the State of Hawaii reported 6 highway intersections exhibiting the most severe safety needs. (See Attachment 7)

   2. The statewide segment listing included segments within the State Highway System. County segments were not included in the listing due to lack of volume counts for county roadways. The locations need to meet the criteria of nine (9) or more accidents in three (3) consecutive years and meet the state average of 101.72 accidents per 100 million vehicle miles. The number-rate method is used to rank the locations. HDOT also uses sliding 0.3-mile segments for segment locations. The segment rate is calculated by the following:

      Segment Accident Rate The number of accidents per 100 million vehicle miles.

      Y = number of years
      A = number of crashes in Y years
      ADT = Average Daily Traffic
      L = segment length
      Rate = A / [ (L*ADT*Y*365) / 100,000,000 ]

      Using the latest complete three (3) years of data, 191 segments in the State of Hawaii met the criteria. 5% of 191 is 9.55 locations. For 2007 the State of Hawaii reported 10 highway segments exhibiting the most severe safety needs. (See Attachment 8) The first segment on the list includes two other segments in the same vicinity.

2. Improvements in the collection and analysis of accident data

   The State of Hawaii DOT will look into working with our Planning Branch to improve the quality of data. County routes would need to be mileposted and additional volume counts would need to be taken at intersections.

3. Discovery and Admission into Evidence

   As stated in the Guidance for the HSIP 5% report requirements: "Section 148(g)(4) stipulates that data compiled or collected for the preparation of the "5 percent reports", or related reports published or made available to the public by USDOT, "...shall not be subject to discovery or admitted into evidence in a Federal or State court proceeding or considered for other purposes in an action for damages arising from any occurrence at a location identified or addressed in such reports..." The information is also protected by Section 409 of Title 23 U.S.C. (discovery and admission as evidence of certain reports and surveys). This legal protection will be noted on the USDOT web site"

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Attachement 7

Highway Intersections Exhibiting the Most Severe
Safety Needs
(Minimum of 5%)

Location	Potential Remedies	Estimated Costs	Implementation Impediments	Comments
Keaau-Pahoa Rd @ Kahakai Blvd	Traffic Signal Installation	$450,000.00		Proposed HSIP FY 06
Keaau-Pahoa Rd @ Pahoa-Kapoho Rd	Traffic Signal Installation	$312,000.00		HSIP Project 130A-01-99, final acceptance 2/06
Keaau-Pahoa Rd @ Old Pahoa Rd & Old Government Rd	Project at Kahakai intersection (above) should have positive influence on this location.			Cost benefit analysis favors Kahakai Blvd
Iroquois Rd @ Keaunui Dr	Traffic Signal Installed	Unknown
Volcano Rd @ Old Volcano Rd	Widening project in this area may have impact on this location.
Keaau-Pahoa Rd @ Ainaloa Blvd	Traffic Signal Installation	$600,000.00		Proposed HSIP FY 07

Date: August 31, 2007

Additional Information Requested

1. Description of methodology used
2. Extend of public road coverage
3. Schedule for upgrading crash data system to full coverage (if applicable)
4. Years used in data analysis
5. State contact person/office

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Attachement 8

Highway Segments Exhibiting the Most Severe
Safety Needs
(Minimum of 5%)

Location	Potential Remedies	Estimated Costs	Implementation Impediments	Comments
Route 200, MP 13.4 - 16.7 Saddle Road	Reconstruction	Unknown	Planning Phase	Saddle Rd. Improvements, Phase 6, East Side (MP 19 to 6)
Route 200, MP 25.5 - 25.8 Saddle Road	Reconstruction	Unknown		Saddle Rd. Improvements, Phase 3, East Side (MP 28 to 19)
Route 200, MP 45.7 - 46.0 Saddle Road			County jurisdiction
Route 200, MP 33.1 - 33.4 Saddle Road	Reconstruction	Unknown		Saddle Rd., PTA-1 Section, Phase 1 (MP 35 - 28) H1-A-AD-6(1)
Route 11, MP 90.7 - 91.0 Mamalahoa Hwy	Mamalahoa Hwy Safety Improvements @ C.Q. Yee Hop Ranch	$230,000.00		Proposed HSIP FY 04 Scheduled for FY 08
Route 11, MP 67.7 - 68.0  Mamalahoa Hwy	Mamalahoa Hwy Safety Improvements @ Kiolakaa Homestead Rd	$230,000.00		Proposed HSIP FY 06 Scheduled for FY 09
Route 190, MP 20.8 - 21.1 Mamalahoa Hwy	Mamalahoa Hwy Safety Improvements @ Puuwaawaa Ranch	$230,000.00		Proposed HSIP FY 04 Scheduled for FY 07
Route 76, MP 0.9 - 1.2  Fort Weaver Road	Low cost safety improvements to include signs and striping	Minimal - Work Order

Date: August 31, 2007

Additional Information Requested

1. Description of methodology used
2. Extend of public road coverage
3. Schedule for upgrading crash data system to full coverage (if applicable)
4. Years used in data analysis
5. State contact person/office