200' TYP. 600' < EACH SIDE BOTH ROADWAYS END OF MERGE LANE TAPER TYPICAL FOR ALL 2-LANE MERGES EXCEPT WHERE THERE IS A MERGE FROM THE RIGHT AND NO OFFSET IN THE THROUGH LANES END OF MERGE LANE TAPER 200' TYPICAL SPACING (YELLOW DELINEATORS) DIVERGE LANE TAPER 600' < EACH SIDE OF RAMP AND RIGHT SIDE OF TANGENT SECTION END OF MERGE LANE TAPER TYPICAL FOR ALL 2-LANE MERGES WITH NO OFFSET IN THE THROUGH LANES 600' < EACH SIDE BOTH ROADWAYS 200' TYP. SPACING DIVERGE LANE TAPER TYPICAL FOR DIVERGING ROADWAYS WHEN WIDENING IS ON BOTH SIDES 200' TYPICAL SPACING (YELLOW DELINEATORS) DIVERGE LANE TAPER 600' * EACH SIDE BOTH ROADWAYS TYPICAL FOR DIVERGING ROADWAYS WHEN WIDENING IS ON RIGHT SIDE SPACING DIVERGE LANE TAPER 600' * EACH SIDE BOTH ROADWAYS 200' TYP. SPACING 200' TYPICAL SPACING (WHITE DELINEATORS) TYPICAL FOR DIVERGING ROADWAYS WHEN WIDENING IS ON LEFT SIDE DELINEATION OF FREEWAY TO FREEWAY CONNECTIONS * WHEN THE WIDTH EDGE OF TRAVELED WAY IS 12', PLACE DELINEATOR 14' FROM THE EDGE OF TRAVELED WAY. THE WIDTH OF THE GORE WILL BE INCREASED TO 24'. * 12' WIDTH WIDTH * 12' AREA * 22' WHITE ING DELINEATOR YELLOW ING DELINEATOR * 22' AREA 8' 8' EDGE OF TRAVELED WAY DIVERGE WIDTH ( 9' OR 10' ) WIDTH MERGE S FOR NORMAL 10' S EDGE OF TRAVELED WAY DEPARTMENT DIRECTOR Kirk T. Steudle Michigan Department of Transportation PREPARED BY APPROVED BY: DIRECTOR, BUREAU OF FIELD SERVICES DESIGN DIVISION DRAWN BY: B.L.T. APPROVED BY: W.K.P. CHECKED BY: 1 OF 8 DIRECTOR, BUREAU OF DEVELOPMENT
5 DELINEATORS WITH RED ON BACK (BOTH SIDES OF ROADWAY) END OF ACCELERATION LANE TAPER DECELERATION LANE TAPER 500' MIN. 300' MIN. DELINEATORS ALSO ON THE LEFT OF RIGHT-CURVING RAMP WHEN RADIUS IS LESS THAN 1000' (TYPICAL) WHEN THE RAMP RADIUS IS LESS THAN OR EQUAL TO 480', USE 3" x 12" YELLOW ING DELINEATORS AT ALL LOCATIONS INTERCHANGE AREA SEE NOTES FOR DELINEATOR OVERLAP (TYPICAL) DELINEATOR REFERENCE POINTS 100' 100' 100' DELINEATOR REFERENCE POINT END OF ACCELERATION LANE TAPER DECELERATION LANE TAPER 5 DELINEATORS WITH RED ON BACK (BOTH SIDES OF ROADWAY) INTERCHANGE DELINEATION 2 OF 8
MEDIAN CROSSOVER (FREEWAYS AND FREE ACCESS) DIRECTIONAL CROSSOVER 4 SPACES AT 100' AT INTERSECTIONS NOTE: BEGIN OR END DELINEATORS AT CURB RETURN OR SPRING POINT. DIVIDED HIGHWAY & MEDIAN CROSSOVER 4 SPACES AT 100' AT INTERSECTIONS RURAL TWO-LANE TWO-WAY ROADWAYS (OPTIONAL) 5 DELINEATORS WITH RED ON BACK (BOTH SIDES OF ROADWAY) END OF ACCELERATION LANE DELINEATOR REFERENCE POINT DELINEATOR REFERENCE POINT BEGIN DECELERATION LANE 300' MIN. 300' MIN. REST AREA & WEIGH STATION DELINEATOR FACE 90 DELINEATOR FACE RADIAL TANGENT DELINEATOR FACE 90 DELINEATOR FACE RADIAL DELINEATOR ORIENTATION ON HORIZONTAL CURVES FOR ONE WAY TRAFFIC 3 OF 8
LEGEND SPACING OF DELINEATORS ON HORIZONTAL CURVES DELINEATORS INSTALLED ON RIGID STEEL POSTS WHITE DELINEATORS: 400' MAXIMUM SPACING ON TANGENT AND CURVES WITH A RADIUS GREATER THAN 3500' 200' MAXIMUM SPACING IN INTERCHANGE AREAS 100' MAXIMUM SPACING ON INTERCHANGE RAMPS RADIUS (FEET) ("R") SPACING ON CURVE (FEET) ("S") AND BEYOND CURVE (FEET) (NOT TO EXCEED 300') 1ST SPACE 2ND SPACE 3RD SPACE (2 x "S") (3 x "S") (6 x "S") YELLOW DELINEATORS: 200' MAXIMUM SPACING IN MERGE OR DIVERGE AREAS OF MAJOR ROADWAYS 100' MAXIMUM SPACING ON INTERCHANGE RAMPS BACK TO BACK WHITE DELINEATORS: 400' MAXIMUM SPACING ON TANGENT AND CURVES WITH A RADIUS GREATER THAN 3500' 100' MAXIMUM SPACING ALONG RIGHT TURN LANES RED DELINEATORS ON BACK OF WHITE DELINEATORS RED DELINEATORS ON BACK OF YELLOW DELINEATORS GREEN DELINEATORS 3,500 175 300 300 300 3,000 160 300 300 300 2,865 160 300 300 300 2,500 150 300 300 300 2,000 130 260 300 300 1,910 130 260 300 300 1,800 125 250 300 300 1,600 120 240 300 300 1,435 110 220 300 300 1,400 110 220 300 300 1,150 100 200 300 300 1,000 90 180 270 300 DELINEATORS INSTALLED ON FLEXIBLE POSTS 3" x 12" WHITE ING DELINEATORS: 200' MAXIMUM SPACING IN INTERCHANGE AREAS 100' MAXIMUM SPACING ON INTERCHANGE RAMPS 820 80 160 240 300 800 80 160 240 300 640 75 150 225 300 600 70 140 210 300 500 65 130 195 300 3" x 12" YELLOW ING DELINEATORS: 200' MAXIMUM SPACING IN MERGE OR DIVERGE AREAS OF MAJOR ROADWAYS 100' MAXIMUM SPACING ON INTERCHANGE RAMPS 3" x 12" RED ING ON BACK OF 3" x 12" WHITE ING DELINEATORS 3" x 12" RED ING ON BACK OF 3" x 12" YELLOW ING DELINEATORS BACK TO BACK 3" x 12" WHITE ING DELINEATORS 480 60 120 180 300 385 55 110 165 300 300 50 100 150 300 275 45 90 135 270 230 40 80 120 240 195 35 70 105 210 145 30 60 90 180 100 20 40 60 120 THE SPACING "S" IS FOUND USING THE FORMULA S = 3 R - 50 WHERE "R" IS THE RADIUS OF THE CURVE IN FEET. SPACING BEYOND SPACING ON CURVE SPACING BEYOND SPACING ON CURVE SPACING ON CURVE SPACING BEYOND NOTE: DELINEATORS SHALL BE PLACED ON TWO LANE TWO WAY SPACING ON CURVE SPACING BEYOND ROADWAY HORIZONTAL CURVES WITH A RADIUS OF 1910' OR LESS, OR AS DIRECTED BY THE REGION/TSC TRAFFIC AND SAFETY ENGINEER. DELINEATOR FACE SHALL BE INSTALLED PERPENDICULAR (OR RADIAL) TO ROADWAY. NOTE: MEDIAN DELINEATORS NOT REQUIRED FOR RADII GREATER THAN 1900' DELINEATOR LOCATION ON THROUGH ROADWAY CURVES DELINEATOR LOCATION ON TWO LANE TWO WAY ROADWAY CURVES 4 OF 8
DIRECTION OF TRAFFIC OUTSIDE EDGE OF TRAVELED LANE 3 4 5 6 7 8 9 2 1 GUARDRAIL APPROACH TERMINAL TYPES 1B & 1T (SRT) DIRECTION OF TRAFFIC OUTSIDE EDGE OF TRAVELED LANE 8 7 3 4 5 6 2 1 GUARDRAIL APPROACH TERMINAL TYPES 1B & 1T (FLEAT) DIRECTION OF TRAFFIC OUTSIDE EDGE OF TRAVELED LANE 1 2 3 4 5 6 7 8 9 GUARDRAIL APPROACH TERMINAL TYPES 2B & 2T (ET OR SKT) DIRECTION OF TRAFFIC OUTSIDE EDGE OF TRAVELED LANE GUARDRAIL DEPARTING TERMINAL TYPES B & T GREEN DELINEATORS AT GUARDRAIL INSTALLATIONS 5 OF 8
START OF DECELERATION LANE OR TAPER (TYP) MAINTENANCE CROSSOVER EACH END OF CURB & GUTTER RUN INTERSECTION EACH END OF CURB & GUTTER RUN AT CATCH BASINS IN YARDS AND FIELDS CURB & GUTTER AND CATCH BASINS GREEN DELINEATOR LOCATIONS 6 OF 8
TOP OF DELINEATOR HEAD-MOUNT APPROX. FLUSH WITH POST TOP NORMAL + 2'-0" (MIN.) TOP OF DELINEATOR HEAD-MOUNT APPROX. FLUSH WITH POST TOP TOP OF REFLECTIVE ING SHALL BE 1" BELOW TOP OF POST NORMAL + 2'-0" (MIN.) EDGE OF PAVEMENT ELEVATION 4'-0"< EDGE OF PAVEMENT ELEVATION 4'-0"< 2'-0" MIN. 4'-0"< CURB DEPTH AS RECOMMENDED BY THE MANUFACTURER INSTALLATION OF DELINEATORS ON RIGID STEEL POST INSTALLATION OF REFLECTIVE ING ON FLEXIBLE POST 3" 1" 1 " 7'-0" < 1" " DIAMETER HOLES AT 1" O.C. 1 " (18 REQUIRED) 12" " DIA. HOLE (TYP.) ƒ" R (TYP.) DELINEATOR REFLECTOR DETAIL.852" X.382" Y.871" 2.25" NOMINAL WEIGHT = 1.12 LBS/FT MINIMUM MOMENT OF INERTIA ABOUT X-X AXIS = 0.031 in. 4 RIGID STEEL POST DETAIL 7 OF 8
NOTES: DELINEATORS SHOULD BE PLACED 2'-0" BEYOND THE NORMAL, 2'-0" BEYOND THE FACE OF A BARRIER CURB, OR IMMEDIATELY BEHIND THE GUARDRAIL POST. DELINEATORS INSTALLED ON FLEXIBLE POSTS SHALL NOT BE PLACED BEHIND GUARDRAIL. FLEXIBLE POST DELINEATORS SHALL BE INSTALLED ACCORDING TO THE CURRENT SPECIFICATIONS AND INSTALLED AT ALL LOCATIONS SPECIFIED ON THIS STANDARD PLAN, OR WHERE DIRECTED BY THE ENGINEER. ON RAMPS, WHITE DELINEATORS SHALL BE PLACED ON THE RIGHT AND YELLOW DELINEATORS SHALL ALSO BE PLACED ON THE LEFT FOR A RIGHT-CURVING RAMP WITH A RADIUS OF 1000' OR LESS. WHERE DELINEATION ON ONE SIDE OF THE ROADWAY OR RAMP ENDS AND DELINEATION ON THE OTHER SIDE APPEARS, THE DELINEATORS SHOULD BE OVERLAPPED A MINIMUM OF TWO UNITS. DELINEATORS SHALL BE OMITTED ALONG THE THROUGH ROADWAY BETWEEN INTERCHANGES WHERE FIXED SOURCE LIGHTING EXISTS, BUT SHALL BE PLACED ON ALL RAMPS AT RURAL INTERCHANGES, WHETHER OR NOT THE INTERCHANGES ARE LIGHTED. RED DELINEATORS SHALL BE LOCATED ON THE BACK OF RAMP DELINEATORS TO FACE WRONG-WAY TRAFFIC MOVEMENTS. PLACEMENT SHALL START AT RAMP TERMINAL AND END MILE IN ADVANCE OF THE DECELERATION LANE. DELINEATOR TO POST ATTACHMENT SHALL BE AS SPECIFIED ON THIS STANDARD PLAN. CRIMP TYPE COLLAR MAY BE SWAGED ON EITHER THE DELINEATOR FACE SIDE OR THE POST SIDE. ON LEFT DECELERATION AND ACCELERATION LANES, USE YELLOW DELINEATORS ON THE LEFT. DELINEATOR PLACEMENT SHOULD CONTINUE WHERE GUARDRAIL OR CONCRETE BARRIER IS PRESENT. DO NOT PLACE DELINEATORS BEHIND GUARDRAIL APPROACH TERMINALS. IF TERRAIN OR OTHER FACTORS PROHIBIT POST MOUNTED DELINEATOR PLACEMENT, INSTALLATION OF GUARDRAIL OR BARRIER MOUNTED ENHANCED DELINEATORS IS RECOMMENDED. CONSIDER PLACING YELLOW DELINEATORS ON THE LEFT SIDE OF FREEWAYS AND DIVIDED HIGHWAYS WHERE NO CABLE BARRIER OR OTHER DELINEATION IS PRESENT. SPACING MAY BE ADJUSTED IN THE FIELD WHERE DRIVEWAYS OR OTHER OBSTACLES PREVENT DELINEATOR PLACEMENT. FINAL SPACING SHALL NOT EXCEED 528'. 8 OF 8