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Pages 159-167

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From page 159...
... 159 Traffic Control Devices The 2009 MUTCD, Part 6, and state manuals govern standards, guidance, and other site- specific information pertaining to installing, maintaining, and operating traffic control devices (TCDs)
From page 160...
... 160 Strategies for Work Zone Transportation Management Plans 9.1.3 Benefits The use of smart arrow boards provides the following benefits (Enterprise 2017) : • Detailed, consistent, and reliable real-time information about lane closures disseminated to travelers upstream of the closure through message signs, traveler information mediums, and connected vehicle applications.
From page 161...
... Traffic Control Devices 161 with the MnDOT Intelligent Roadway Information System (IRIS) and the MnDOT Condition Acquisition and Reporting System (CARS)
From page 162...
... 162 Strategies for Work Zone Transportation Management Plans 9.1.8.1 Iowa In August 2019, the Iowa DOT announced plans to adopt smart arrow board technology to collect near real-time data on the status of lane closures in construction and maintenance work zones. As a part of this, Iowa DOT took on the following responsibilities: • Work with Iowa chapter members and arrow board manufacturers to finalize specifications and test smart arrow boards before the end of 2019.
From page 163...
... Traffic Control Devices 163 9.2 Lighting Devices 9.2.1 Description Roadway lighting devices enhance nighttime work zones by illuminating the work area to help drivers see TCDs, roadway alignment, pavement markings, and workers. Refer to Section 6.2 for information on night work.
From page 164...
... 164 Strategies for Work Zone Transportation Management Plans • Creates uniform speeds throughout the work area. • Allows construction work to be completed safely and effectively.
From page 165...
... Traffic Control Devices 165 • Glare. Glare needs to be considered from each direction and on all approaching roadways and opposing lanes of traffic, even those separated by grass medians.
From page 166...
... 166 Strategies for Work Zone Transportation Management Plans Florida, Missouri, Oregon, Washington, New York, Maryland, Mississippi, North Carolina, California, and Michigan have lighting standards for nighttime construction. Some of those standards have a limited specification about nighttime lighting and some of them, such as those in New York and North Carolina, are comprehensive regarding the practice of nighttime work zone lighting.
From page 167...
... Traffic Control Devices 167 9.2.9 Cost The rental cost for portable light plant towers ranges from $500 to $900 per month, and the purchase cost ranges from $9,000 to $15,000 per unit. These costs vary depending on location, type, size, height, and other factors.

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