Performance-Based Highway Maintenance and Operations Management (2012) / Chapter Skim
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Pages 8-26
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9 Background Historical context Recognition of the importance of highway maintenance performance goes back at least four decades in U.S. practice.
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10 values are referred to as "thresholds," defined as "predetermined, system-wide maintenance levels for features and categories," in the nature of grading scales, indicators, or scores (Maintenance Quality Assurance -- Synthesis of Measures 2005, p.
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11 • Data collection: frequency; sample size (or 100%) ; highway segment length; manner of collection; and use of automated surveys, if any.
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12 get the idea across. Also, these outcomes must be viewed in the context of typical agency stewardship of a highway system and the technological limits of maintenance itself.
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13 Interstate Highway System (Cambridge Systematics Inc.
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14 LOS threshold values appropriate to the high-standard interstate system, drawn from a composite of state DOT systems and judgments by members of the research team. SurvEy of nationwidE PracticE As the preceding sections show, much of the research since the publication of NCHRP Report 422 has centered on performance-based elements -- measurement of condition, formulation of performance measures, different approaches to LOS, definitions of targets and thresholds, and the like -- and their comparison among North American transportation agencies.
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15 the option to describe the application in his or her own words. The categories in Table 1 were designed to indicate the degree to which the state DOT had organized and developed a performance-based process on a programmatic basis to address a range of business procedures and management decisions.
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16 and formalized management treatment of problems across a broad M&O program. Accordingly, the survey questions regarding this approach were not extensive; they addressed such topics as the types of assets and activities managed and the methods of field inspection.
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17 items in comments. The purpose of this question was not to describe every asset or activity in detail, because state DOTs differ considerably in the numbers of such elements in their management systems, but rather to get a sense of the general scope of the M&O program that is managed by the responding M&O organizations.
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18 Other variations in practice were described. Maryland State Highway Administration reported that in cases where other jurisdictions deliver maintenance work for the state, those jurisdictions have responsibility for monitoring the LOS provided.
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19 A follow-up question inquired about QC mechanisms to validate field inspection results. More than two-thirds of the responding agencies indicated that they do perform QC checks, using a variety of techniques.
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20 28 zones based on traffic volume and terrain, which allowed an additional dimension of variation in LOS values. Several comments by state DOT respondents focused on the nature of statewide variability in performance-based measures: • Missouri DOT remarked that while measures were for the most part uniform statewide, some M&O activities might be susceptible to variation between urban and rural areas.
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21 good to excellent. Although there has not been enough funding to achieve this goal, the department has come close to attaining it.
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22 Methods of Obtaining Industry Input No. of Responses Surveys of industry firms 0 General meetings, agency presentations 3 By-invitation meetings, invited industry presentations 2 Industry/association review and comment on relevant proposed policies and practices 4 Newsletter distribution 1 Website, social media announcements and responses 2 Focus groups, discussion groups on specific topics 1 Formally organized industry advisory panels 2 Other methods 0 No response 1 Note: Respondents could select more than one choice above.
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23 • Tennessee DOT reports performance information to the agency group that compiles information called for by Governmental Accounting Standards Board. • Wyoming DOT observed that anyone with Internet access can access to the summaries of performance results.
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24 • ITS device maintenance that reflects performance and reliability; consideration of IntelliDrive devices. • Performance measures for electronic and environmental sensing systems (as in tunnels)
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25 consultant to formulate a performance-based approach and its elements, and to configure and customize the software. • The third state has engaged a local university to recommend a performance-based approach to managing its M&O program.
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26 customer input, and integration within agency business processes, to name a few. While adopting a nationwide perspective, however, these past studies have been limited in scope and detail, conducted at a very general level or as adjuncts to other research objectives.
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27 goal or objective, and analytic estimates of LOS values that are realistic to attain and sustain. • State DOTs tend to look to several management tasks in common to be supported by performance-based methods.
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