HomeMy WebLinkAboutSHOULDER WORK DOC - 22-00335 - 870 N 2nd E - Install CablePage 80 2011 Edition
Chapter 5 December 2011
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5.3 Two-Lane, Two-Way Roads
Shoulder Work w/ Minor Road Encroachment Diag. 300
Use this detail for non-freeway work which extends into a travel lane and
maintains a minimum 10 foot travel lane. If a minimum 10 foot travel lane
can not be maintained, or when traffic can not safely pass by in both lanes
simultaneously, use the appropriate lane closure diagrams – for example,
Diagrams 310 through 350.
A lane closure may be appropriate for conditions such as high traffic
volumes, high speeds, and inadequate approach sight distance to the work
space, or heavy equipment adjacent to the travel lane.
1. Use truck-mounted flashing warning lights on work and protection
vehicles. See Section 4.3 – Lights and Lighted Signs for exceptions.
2. For added visibility, a truck-mounted arrow board or PCMS in caution
mode may be used.
3. Cones shall be placed along the entire length of the work space. If a
protection vehicle is used and work is in place one hour or less, the
taper and tangent devices may be omitted.
4. If the speed is 45 mph or higher, volumes exceed 2000 ADT, or there
is limited sight distance, consider placing cones or tubular markers on
centerline.
5. An arrow board in caution mode or truck-mounted PCMS with
“SHOULDER WORK” or other appropriate message may be used for
higher visibility.
Sign Spacing and Buffer Lengths (feet)
Posted
Speed
Spacing Between Signs Buffer
Space A B C
20
100 100 100
50
25 75
30 100
35 350 350 350 125
40 150
45
500 500 500
180
50 210
55 250
2011 Edition Page 81
December 2011 Chapter 5
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Shoulder Work w/ Minor Road Encroachment Diag. 300