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OCR for page 13
SECTION IV
Index of Strategies by Implementation
Timeframe and Relative Cost
Exhibit IV-1 classifies strategies according to the expected timeframe required for
implementation and the relative cost to implement and operate each strategy for this
emphasis area. In several cases, the implementation time will depend on such factors as the
agency's procedures, the number of stakeholders involved, and the presence of any
controversial situations. The range of costs may also vary somewhat for some of these
strategies because of many of the same factors.
Placement in the table below is meant to reflect costs relative to the other strategies listed
for this emphasis area only, rather than relative to strategies discussed in other guides in
the NCHRP Report 500 series. The costs of the strategies are estimated on a project level.
For programwide strategies, the costs are considered to be spread over multiple projects,
as would realistically be the case for many of the strategies discussed in this guide.
EXHIBIT IV-1
Classification of Strategies According to Expected Timeframe and Relative Cost
Relative Cost to Implement and Operate
Timeframe for Moderate
Implementation Strategy Low Moderate to High High
Short (<1 year) 19.1 B2--Improve visibility of work zone traffic
control devices
19.1 B3--Improve visibility of work zone
personnel and vehicles
19.1 B4--Reduce flaggers' exposure to traffic
19.1 C2--Implement measures to reduce work
space intrusions (and limit consequences of
intrusions)
19.1 D1--Enhance enforcement of traffic laws
in work zones
19.1 D2--Improve credibility of signs
19.1 E1--Disseminate work zone safety
information to road users
19.1 E2--Provide work zone training programs
and manuals for designers and field staff
19.1 F4--Implement work zone quality
assurance procedures (i.e., safety inspections
or audits)
IV-1
OCR for page 14
SECTION IV--INDEX OF STRATEGIES BY IMPLEMENTATION TIMEFRAME AND RELATIVE COST
EXHIBIT IV-1 (Continued)
Classification of Strategies According to Expected Timeframe and Relative Cost
Relative Cost to Implement and Operate
Timeframe for Moderate
Implementation Strategy Low Moderate to High High
Medium 19.1 A1--Improve maintenance and
(12 years) construction practices
19.1 A2--Utilize full-time roadway closure for
construction operations*
19.1 A3--Utilize time-related contract provisions
19.1 A4--Use nighttime road work
19.1 A5--Use demand management programs
to reduce volumes through work zones
19.1 B1--Implement ITS strategies to improve
safety
19.1 C1--Establish work zone design guidance
19.1 C3--Improve work zone safety for
pedestrians, bicyclists, motorcyclists, and
heavy-truck drivers
19.1 D3--Improve application of increased
driver penalties in work zones
19.1 F1--Develop or enhance agency-level
work zone crash data systems
19.1 F2--Improve coordination, planning, and
scheduling of work activities
19.1 F3--Use incentives to create and operate
safer work zones
Long (>2 years) 19.1 A6--Design future work zone capacity into
new or reconstructed highways
* Costs of improvements on parallel routes may be significant.
IV-2
