DELINEATOR REFERENCE POINT 200' TYPICAL SPACING (YELLOW DELINEATORS) END OF MERGE LANE TAPER DELINEATOR REFERENCE POINT
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1 200' TYP. 0' < 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 (YELLOW DELINEATORS) DIVERGE LANE TAPER 0' < 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 0' < EACH SIDE BOTH ROADWAYS 200' TYP. DIVERGE LANE TAPER TYPICAL FOR DIVERGING ROADWAYS WHEN WIDENING IS ON BOTH SIDES 200' TYPICAL (YELLOW DELINEATORS) DIVERGE LANE TAPER 0' * EACH SIDE BOTH ROADWAYS TYPICAL FOR DIVERGING ROADWAYS WHEN WIDENING IS ON RIGHT SIDE DIVERGE LANE TAPER 0' * EACH SIDE BOTH ROADWAYS 200' TYP. 200' TYPICAL (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 Paul C. Ajegba 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
2 5 DELINEATORS WITH RED ON BACK (BOTH SIDES OF ROADWAY) AT 400' MAINLINE END OF ACCELERATION LANE TAPER DECELERATION LANE TAPER 500' ' 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 FLEXIBLE 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) AT 400' MAINLINE INTERCHANGE DELINEATION 2 OF 8
3 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 ' ' 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
4 LEGEND DELINEATORS INSTALLED ON RIGID STEEL POSTS WHITE PANEL DELINEATORS: 400' MAXIMUM ON TANGENT AND CURVES WITH A RADIUS GREATER THAN 3500' 200' MAXIMUM IN INTERCHANGE AREAS 100' MAXIMUM ON INTERCHANGE RAMPS YELLOW PANEL DELINEATORS: 200' MAXIMUM IN MERGE OR DIVERGE AREAS OF MAJOR ROADWAYS 100' MAXIMUM ON INTERCHANGE RAMPS BACK TO BACK WHITE PANEL DELINEATORS: 400' MAXIMUM ON TANGENT AND CURVES WITH A RADIUS GREATER THAN 3500' 100' MAXIMUM ALONG RIGHT TURN LANES RED PANEL DELINEATORS ON BACK OF WHITE PANEL DELINEATORS RED PANEL DELINEATORS ON BACK OF YELLOW PANEL DELINEATORS GREEN PANEL DELINEATORS DELINEATORS INSTALLED ON FLEXIBLE POSTS 3" x 12" WHITE ING DELINEATORS: 200' MAXIMUM IN INTERCHANGE AREAS 100' MAXIMUM ON INTERCHANGE RAMPS 3" x 12" YELLOW ING DELINEATORS: 200' MAXIMUM IN MERGE OR DIVERGE AREAS OF MAJOR ROADWAYS 100' MAXIMUM 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 NOTE: WHEN THE ABOVE CONFLICTS WITH THE CURVE CHARTS ON 5, USE WHICHEVER VALUE RESULTS IN THE CLOSER. 4 OF 8
5 CURVE RADIUS KNOWN CURVE RADIUS UNKNOWN RADIUS (R) OF CURVE (FT) (S) ON CURVE (FT) BEFORE/AFTER CURVE CURVE ADVISORY SPEED (MPH)* (S) ON CURVE (FT) BEFORE/AFTER CURVE 2S 3S 6S 2S 3S 6S * POSTED OR STATUTORY SPEED LIMIT IF NO ADVISORY POSTED ,050-17,830 17,830 NORMAL THE "S" IS FOUND USING THE FORMULA S = 3 R - 50 WHERE "R" IS THE RADIUS OF THE CURVE IN FEET. BEYOND (6S, 3S, 2S) ON CURVE (S) (SEE CHART) IN ADVANCE (2S, 3S, 6S) BEYOND (6S, 3S, 2S) ON CURVE (S) (SEE CHART) IN ADVANCE (2S, 3S, 6S) IN ADVANCE (6S, 3S, 2S) ON CURVE (S) (SEE CHART) BEYOND (2S, 3S, 6S) NOTE: DELINEATORS SHALL BE PLACED ON TWO LANE TWO WAY ROADWAY HORIZONTAL CURVES WITH A RADIUS OF 1900' OR LESS, OR AS DIRECTED BY THE REGION/TSC TRAFFIC AND IN ADVANCE (6S, 3S, 2S) ON CURVE (S) (SEE CHART) BEYOND (2S, 3S, 6S) SAFETY ENGINEER. DELINEATOR FACE SHALL BE INSTALLED PERPENDICULAR (OR RADIAL) TO ROADWAY. DELINEATOR LOCATION ON FREEWAY AND DIVIDED ROADWAY CURVES DELINEATOR LOCATION ON TWO LANE TWO WAY ROADWAY CURVES 5 OF 8
6 GUARDRAIL APPROACH TERMINAL DELINEATOR LOCATED 1 FOOT BEHIND TYPE 1 LAST POST (FROM APPROACH END) TYPE 2 FIRST POST (FROM APPROACH END) DIRECTION OF TRAFFIC OUTSIDE EDGE OF TRAVELED LANE GUARDRAIL DEPARTING TERMINAL TYPES B, T, & MGS GREEN DELINEATORS AT GUARDRAIL INSTALLATIONS 6 OF 8
7 START OF DECELERATION LANE OR TAPER (TYP) MAINTENANCE CROSSOVER EACH END OF CURB & GUTTER RUN INTERSECTION NOTE: MAY BE OMITTED AT FREEWAY RAMP TERMINALS DUE TO THE PRESENCE OF OTHER DELINEATORS EACH END OF CURB & GUTTER RUN AT CATCH BASINS IN YARDS AND FIELDS CURB & GUTTER AND CATCH BASINS GREEN DELINEATOR LOCATIONS 7 OF 8
8 TOP OF DELINEATOR REFLECTOR APPROX. FLUSH WITH POST TOP AGGREGATE 2'-0" TOP OF DELINEATOR REFLECTOR APPROX. FLUSH WITH POST TOP TOP OF REFLECTIVE ING SHALL BE 1" BELOW TOP OF POST AGGREGATE 2'-0" EDGE OF PAVEMENT ELEVATION 4'-0"< EDGE OF PAVEMENT ELEVATION 4'-0"< 2'-0" 4'-0"< INSTALLATION OF DELINEATOR REFLECTORS ON RIGID STEEL POST CURB DEPTH AS RECOMMENDED BY THE MANUFACTURER INSTALLATION OF REFLECTIVE ING ON FLEXIBLE POST 3" 1 " 7'-0" < 1" 1" " DIAMETER HOLES (BEFORE GALVANIZING) AT 1" O.C. (18 MINIMUM) 12" 1 " " DIA. HOLE (TYP.) ƒ" R (TYP.) DELINEATOR REFLECTOR DETAIL NOTES: DELINEATORS SHOULD BE PLACED 2'-0" BEYOND THE AGGREGATE, 2'-0" BEYOND THE FACE OF A BARRIER CURB, IMMEDIATELY BEHIND THE GUARDRAIL POST, OR AS NEAR AS POSSIBLE BEHIND CONCRETE BARRIER. 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, AN OVERLAP OF TWO DELINEATOR INSTALLATIONS SHALL BE USED. 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..852" X Y.382" 2.25" NOMINAL WEIGHT = 1.12 LBS/FT MINIMUM MOMENT OF INERTIA ABOUT X-X AXIS = in. 4 RIGID STEEL POST DETAIL.871" DELINEATORS SHALL BE PLACED ON ALL RAMPS AT RURAL INTERCHANGES WHETHER OR NOT THE INTERCHANGES ARE LIGHTED. DELINEATORS SHALL BE OMITTED ALONG THE THROUGH ROADWAY BETWEEN INTERCHANGES WHERE FIXED SOURCE LIGHTING EXISTS. DELINEATOR PLACEMENT SHOULD CONTINUE WHERE GUARDRAIL OR CONCRETE BARRIER IS PRESENT. DO NOT PLACE DELINEATORS BEHIND GUARDRAIL APPROACH TERMINALS EXCEPT AS SHOWN ON 6 OF THIS STANDARD. IF TERRAIN OR OTHER FACTORS PROHIBIT POST MOUNTED DELINEATOR PLACEMENT, INSTALLATION OF GUARDRAIL OR BARRIER MOUNTED ENHANCED DELINEATORS IS RECOMMENDED. ALTERNATE DELINEATOR LOCATION METHOD: THE FIRST DELINEATOR ON EACH SIDE OF THE ROADWAY IS LOCATED FROM THE AGGREGATE. A NEW OFFSET REFERENCE IS GENERATED BY MEASURING FROM THE LOCATED DELINEATOR TO THE STRIPED EDGELINE. THIS MEASUREMENT CAN BE USED TO LOCATE THE OTHER DELINEATORS IN A CORRIDOR OF SIMILAR CROSS SECTION. 8 OF 8
2 Min. Min. Edge of. Edgeline See Note 3 PLAN VIEW. See Note 3. This distance may vary
8" Physical gore ( ) ( ) 250 Varies 250 TYPICAL RUMBLE STRIP PLACEMENT AT EXIT AND ENTRANCE RAMPS This distance may vary This distance may vary ( ) 2 16" edge of R=12" Max ( ) Physical gore Texturing 1.
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