3a_Traffic Control Plan MUTCD.pdf
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- Attached to
- Grand Cut-To-Length Stewardship IRSC
- Solicitation number
- 12363N26Q4043
- Issued by
-
Department of Agriculture Forest Service
About this file
This is an attachment describing signing standards for logging and maintenance operations on Forest Service lands in the Lake Tahoe Basin Management Unit.
All signs must be manufactured and installed according to the Federal Highway Administration's Manual on Uniform Traffic Control Devices (MUTCD) and Forest Service publication EM 7100-15. Signs must feature a reflective orange background with black legend and border in either diamond or rectangular shapes; handpainted and homemade signs are prohibited. Acceptable substrate materials include High Density Overlay plywood, aluminum, fiberglass reinforced plastic, corrugated plastic, or roll-up fabrics. Sign sizing and lettering (Series C alphabet) must conform to MUTCD and EM 7100-15 standards, with letter size determined by operational speed. Signs must be mounted on separate posts—never on trees or other signs—and positioned 2 feet minimum from the road edge (6-12 feet preferred) at a minimum height of 7 feet from the bottom of the sign to the near edge of the travelway. Supplemental signs mounted below primary signs require a 6-foot height minimum. Sign placement distance from the activity must be 100-500 feet depending on posted or deceleration speed, with placement distances specified in MUTCD Table II-1. Portable supports may be used for short-term conditions of one work shift or less and must meet MUTCD breakaway standards. The document specifies approved sign types including road construction, logging operations, blasting zones, log trucks, and truck crossing warnings, identified by specific designation codes such as FG20-1-48, W21-3-30, and FW22-3-30, with barricade markers provided per MUTCD specifications.
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Text version
Grand CTL Stewardship IRSC Page
Lake Tahoe Basin Management Unit Lake Tahoe Basin
ATTACHMENT 3a. - LOGGING AND MAINTENANCE OPERATIONS SIGNING STANDARDS
All signs must be manufactured & installed as specified in the FHWA "Manual on Uniform Traffic Control Devices" (MUTCD) & FS publication "Standards for Forest Service Signs & Posters"(EM 7100-15).
SIGN STANDARDS
SHAPE & COLOR: Generally, signs for logging and maintenance operations are either diamond-shaped or rectangular. All signs are reflective orange background with black legend and border unless shown otherwise. Handpainted, homemade signs are not legal. Fluorescent paint is not reflectorized.
SUBSTRATE: Sign substrate material may be High Density Overlay (HDO) Plywood, Aluminum, Fiberglass Reinforced Plastic, Corrugated Plastic or Roll-up Fabrics.
SIGN SIZE: Sign size is a factor of speed and MUTCD & FS standards. Where conditions of speed, volume, or special hazard require greater visibility or emphasis, larger signs should be used. Minimum sizes for the most common signs can be found in Figure 4. Refer to the EM-7100-15 for additional sign sizes.
LEGEND: All lettering shall be Series "C" alphabet, conforming to Standard Alphabets for Highway Signs.
Letter size is also a function of speed - use letter size and word messages as specified in MUTCD and EM- 7100-15.
SIGN PLACEMENT
Signs are to be installed in locations as agreed to in the traffic control plan. All signs are to be removed, covered, or folded when operations are not in progress or the sign message is not applicable. Signs should generally be located on the right-hand side of the roadway. When special emphasis is needed, signs may be placed on both the left and right sides of the road. Sign message shall be clearly visible to road users, mounted on posts or portable sign stands.
LATERAL CLEARANCE
From the edge of the road - 2 foot minimum, where slope limits to less than 6 feet. 6-12 foot preferred.
HEIGHT
Minimum of 7 feet, measured from the bottom of the sign to the near edge of the travelway. The height to the bottom of a supplemental sign mounted below the primary sign will be 6 feet.
Figure 1: Sign Placement Dimensions
6' - 12'
FEET
(2' minimum where slope limits to less than 6')
HEAVY
TRUCK
TRAFFIC
Ed ge o f t ra ve lw ay
6' M
IN
7' M
IN
ROAD
CONSTRUCTION
NEXT 5 MILES
END
CONSTRUCTION
LOGGING
OPERATIONS
NEXT 5 MILES
END
LOGGING
OPERATIONS
END
BLASTING
ZONE
CONSTRUCTION
500 FEET
MACHINERY
500 FEET
LOGGING
OPERATIONS
LOG
TRUCKS
BLASTING
ZONE
1000 FT
PLACEMENT DISTANCE
Signs must be located 100-500 feet prior to the activity, (both ends if a through road) and maintained at that distance.
This distance is based on speed. Refer to Figure 2 , Table II-1, MUTCD, a portion of which is reproduced here, to determine correct placement distance.
Posted or Decelaration to listed advisory speed 85 percentile MPH speed MPH
10 20 30 40 50
20 NA
25 100
30 150 100
35 200 175
40 275 250 175
45 350 300 250
50 425 400 325 225
55 500 475 400 300
60 575 550 500 400 300 65 650 625 575 500 375
Figure 2: A Portion of MUTCD TABLE II-1
SIGN SUPPORTS
POSTS: Signs are to be mounted on separate posts. Supplemental signs such as Speed Advisory plates are to be mounted on the same post as the primary sign. Do not mount signs on trees or other signs. Posts may be wood, metal, carsonite or similar material. Where sign supports cannot be sufficiently offset from the road edge, supports will meet breakaway standards. Single wood posts with less than 24 square inches do not require breakaway design.
TEMPORARY / PORTABLE SUPPORTS: Portable supports may be used for short-term, short-duration, and mobile conditions. MUTCD defines this time period as one work shift, 12 hours or less. All portable supports must meet MUTCD standards, including breakaway. These must be a minimum of 1 foot above the road surface or more if visibility requires it.
Figure 3: Examples of Temporary/Portable Supports
SIGNS
The following signs meet the intent of the Safety standard. This is not a complete listing of signs that may be needed.
FG20-1-48* FG20-2-48 FG20-3-42* FG20-3a-42 FW22-3-30
FW20-1-30* W21-3-30* FW21-4a-30 FW11-7-24 W22-1-36*
FW8-6-24 FW11-9a-24 W7-3a-24* W13-1-18** W20-7aP-24*
* Specify Distance ** Specify Speed
BM-L-O BM-R-O
Barricade Markers (See MUTCD for length and stripe size)
CROSSING
HEAVY
TRAFFIC NEXT
7 MILES
M.P.H.
FEET
| ATTACHMENT 3a. - LOGGING AND MAINTENANCE OPERATIONS SIGNING STANDARDS |
| SIGN STANDARDS |
| SIGN PLACEMENT |
| SIGN SUPPORTS |
| SIGNS |
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