Very Short Duration Work Zone Safety for Maintenance and Other Activities (2019) / Chapter Skim
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5 Existing MUTCD Guidelines The Manual on Uniform Traffic Control Devices (MUTCD; FHWA 2009) uses work duration as a major factor in TTC strategy decision making and defines five distinct durations in Section 6G.02: A
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6 Very Short Duration Work Zone Safety for Maintenance and Other Activities closure in approximately 15 minutes using conventional methods. In essence, the selection of a 15-minute threshold implies that anytime the work activity is stopped for longer than the time it would take to install and remove a merging taper and other appropriate traffic control devices, those devices could be installed.
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Literature Review 7 Figure 1. MUTCD TA 17 mobile operation on a two-lane road (FHWA 2009)
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8 Very Short Duration Work Zone Safety for Maintenance and Other Activities Figure 2. MUTCD TA 35 mobile operation on a multilane road (FHWA 2009)
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Literature Review 9 * See Table A
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10 Very Short Duration Work Zone Safety for Maintenance and Other Activities (with intermittent stops of 15 minutes or less) with no channelizing devices and when the large utility trucks with high-intensity rotating, flashing, oscillating, or strobe lights were used to perform the work.
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Literature Review 11 space between workers on foot and the closest upstream truck-mounted attenuator (TMA) vehicle; they found that 100 to 150 ft was optimal to allow TMA vehicle roll-ahead distance (if struck by an errant vehicle)
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