LATERAL CLEARANCE. From the edge of the road - 2 foot minimum, where slope limits to less than 6 feet. 6-12 foot preferred. HEIGHT Edge of travelway Minimum of 7 feet, 6' MIN 7' MIN 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.
LATERAL CLEARANCE. From the edge of the road - 2 foot minimum, where slope limits to less than 6 feet. 6-12 foot preferred.
LATERAL CLEARANCE. From the edge of the road - 2 foot minimum, where slope limits to less than 6 feet. 6-12 foot preferred. HEIGHT Edge of travelway Minimum of 7 feet, 6' MIN 7' MIN 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 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. Figure 2: A Portion of MUTCD TABLE II-1 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 55 000 000 000 300 60 575 550 500 400 300 65 650 625 575 500 375 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 Timber Sale Contract Provision B6.33, SAFETY. This is not a complete listing of signs that may be needed. ROAD CONSTRUCTION NEXT 5 MILES END CONSTRUCTION LOGGING OPERATIONS NEXT 5 MILES END LOGGING OPERATIONS FG20-1-48* FG20-2-48 FG20-3-42* FG20-3a-42 END BLASTING ZONE ROAD CONSTRUCTION 500 FEET ROAD MACHINERY 500 FEET LOGGING OPERATIONS FW22-3-30 FW20-1-30* W21-3-30* FW21-4a-30 LOG TRUCKS BLASTING ZONE 1000 FT TRUCK CROSSING HEAVY TRUCK TRAFFIC FW11-7-24 W22-1-36* FW8-6-24 FW11-9a-24 NEXT 7 MILES 35 M.P.H. 500 FEET W7-3a-24* W13-1-18** W20-7aP-24* * Specify Distance ** Specify Speed XX-X-X XX-R-O Barricade Markers (See MUTCD for length and stripe size...
