620.2 Pavement and Curb Markings (MUTCD Chapter 3B) - Revision history

TaracksA at 16:54, 1 December 2025

2025-12-01T16:54:23Z

WilkeJ: /* {{SpanID|620.2.16}}620.2.16 Inlaid Pavement Markers – General (MUTCD Section 3B.14) */

2025-12-01T14:40:32Z

{{SpanID|620.2.16}}620.2.16 Inlaid Pavement Markers – General (MUTCD Section 3B.14)

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	=={{SpanID\|620.2.16}}620.2.16 Inlaid Pavement Markers – General (MUTCD Section 3B.14)==		=={{SpanID\|620.2.16}}620.2.16 Inlaid Pavement Markers – General (MUTCD Section 3B.14)==
	[[File:620.2_additionalImagery_1.png\|thumb\|right\|489px\|An example of ambient light obscuring pavement markings, but also an example of ILPMs also not working due to the flat grade of the highway not allowing the grooves the ILPMs are installed in to drain, resulting in the markers becoming submerged and rendered ineffective]]		[[File:620.2_additionalImagery_1.png\|thumb\|right\|489px\|An example of ambient light obscuring pavement markings, but also an example of ILPMs also not working due to the flat grade of the highway not allowing the grooves the ILPMs are installed in to drain, resulting in the markers becoming submerged and rendered ineffective.]]
	'''Support. '''MoDOT has utilized a series of various pavement marking systems to enhance wet night visibility over the decades, including snow plowable raised pavement markers, rumble stripe edge lines, grooved in durable markings with wet reflective elements, grooved in waterborne markings with wet elements and the current marking system using an enhanced ASTM Type III glass bead (MoDOT Type L) on all pavement markings on major roads. The MoDOT Type L / high build waterborne pavement marking and edge line rumble stripes are the predominate wet nighttime marking system, with inlaid pavement markers being an optional supplement to this system.		'''Support. '''MoDOT has utilized a series of various pavement marking systems to enhance wet night visibility over the decades, including snow plowable raised pavement markers, rumble stripe edge lines, grooved in durable markings with wet reflective elements, grooved in waterborne markings with wet elements and the current marking system using an enhanced ASTM Type III glass bead (MoDOT Type L) on all pavement markings on major roads. The MoDOT Type L / high build waterborne pavement marking and edge line rumble stripes are the predominate wet nighttime marking system, with inlaid pavement markers being an optional supplement to this system.

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	:A. ILPMs are limited to freeways with three or more through lanes in one direction.		:A. ILPMs are limited to freeways with three or more through lanes in one direction.
	:B. The cradle system of ILPMs shall be the marker style used. ILPMs shall comply with the current approved vendor list.		:B. The cradle system of ILPMs shall be the marker style used. ILPMs shall comply with the current approved vendor list.
	:C. ILPMs shall be installed in pairs, placed in every other gap between the skips of broken (intermittent) lane line markings only		:C. ILPMs shall be installed in pairs, placed in every other gap between the skips of broken (intermittent) lane line markings only when:
	:# Installed in accordance with manufactures’ installation guidance.		:# Installed in accordance with manufactures’ installation guidance.
	:# Special attention needs to be given to installations on concrete as ILPM installations in concrete have historically had high failure rates. The selected manufacturer must demonstrate they have corrected this issue with an appropriate installation procedure.		:# Special attention needs to be given to installations on concrete as ILPM installations in concrete have historically had high failure rates. The selected manufacturer must demonstrate they have corrected this issue with an appropriate installation procedure.

WilkeJ: /* {{SpanID|620.2.14}}620.2.14 Lane-Reduction Transitions (MUTCD Section 3B.12) */

2025-12-01T14:37:14Z

{{SpanID|620.2.14}}620.2.14 Lane-Reduction Transitions (MUTCD Section 3B.12)

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	:B. An edge line (see [[#620.2.10\|EPG 620.2.10]]) in the direction of the convergence and through the transition area, except as provided in the first Option paragraph below.		:B. An edge line (see [[#620.2.10\|EPG 620.2.10]]) in the direction of the convergence and through the transition area, except as provided in the first Option paragraph below.

	'''Guidance.''' Except as provided in, the following Option paragraph the edge line marking should be installed from the location of the Lane Ends warning sign to beyond the beginning of the narrower roadway.		'''Guidance.''' Except as provided in the following Option paragraph, the edge line marking should be installed from the location of the Lane Ends warning sign to beyond the beginning of the narrower roadway.

	'''Option. '''On roadways with operating speeds less than 25 mph where curbs clearly define the roadway edge in the lane-reduction transition, or where a through lane becomes a parking lane, the edge line may be omitted as determined by engineering judgment.		'''Option. '''On roadways with operating speeds less than 25 mph where curbs clearly define the roadway edge in the lane-reduction transition, or where a through lane becomes a parking lane, the edge line may be omitted as determined by engineering judgment.

WilkeJ: /* {{SpanID|620.2.4}}620.2.4 Establishing and Recording No Passing Zones */

2025-12-01T14:36:15Z

{{SpanID|620.2.4}}620.2.4 Establishing and Recording No Passing Zones

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	=={{SpanID\|620.2.4}}620.2.4 Establishing and Recording No Passing Zones==		=={{SpanID\|620.2.4}}620.2.4 Establishing and Recording No Passing Zones==

	'''Standard. '''The establishment of no passing zones shall be accomplished using two vehicles maintaining a predetermined distance. This distance will mark the beginning and end of the no passing zone section where a target 3.5 ft. above the road surface on the lead vehicle is just out of sight of the driver of the trailing vehicle, ~~who's~~ eye level is 3.5 ft. above the road surface. The use of a highly visible target, such as a flashing amber light, is recommended.		'''Standard. '''The establishment of no passing zones shall be accomplished using two vehicles maintaining a predetermined distance. This distance will mark the beginning and end of the no passing zone section where a target 3.5 ft. above the road surface on the lead vehicle is just out of sight of the driver of the trailing vehicle, whose eye level is 3.5 ft. above the road surface. The use of a highly visible target, such as a flashing amber light, is recommended.

	The line of sight used by the trailing vehicle observer shall remain within the limits of the pavement and/or shoulder. Due to current mowing practices, sight distance viewed across any other right of way can be obscured at various times of the year due to seasonal vegetation and right of way which has not been mowed (see [[#fig3b4\|Figure 620.2.3.2]]).		The line of sight used by the trailing vehicle observer shall remain within the limits of the pavement and/or shoulder. Due to current mowing practices, sight distance viewed across any other right of way can be obscured at various times of the year due to seasonal vegetation and right of way which has not been mowed (see [[#fig3b4\|Figure 620.2.3.2]]).

WilkeJ: /* {{SpanID|620.2.29}}620.2.29 Aircraft Speed Measurement Markings */

2025-12-01T14:33:50Z

{{SpanID|620.2.29}}620.2.29 Aircraft Speed Measurement Markings

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	\|<center>'''Figure 620.2.29 Pavement Marking for Aircraft Speed Check Stations'''</center>]]		\|<center>'''Figure 620.2.29 Pavement Marking for Aircraft Speed Check Stations'''</center>]]

	Speed measurement markings, if used, shall be white, and shall be 24 in. x 24 in. and the distance between the ~~block~~ shall be 660 ft., measured from the leading edge of the first block to the leading edge of the second block. This distance shall be measured on the actual pavement surface and is the same for all posted speeds (See [[#fig620.2.29\|Figure 620.2.29]]).		Speed measurement markings, if used, shall be white, and shall be 24 in. x 24 in. and the distance between the blocks shall be 660 ft., measured from the leading edge of the first block to the leading edge of the second block. This distance shall be measured on the actual pavement surface and is the same for all posted speeds (See [[#fig620.2.29\|Figure 620.2.29]]).

	The markings shall be reflective, and are to be placed on the center of each driving lane.		The markings shall be reflective, and are to be placed on the center of each driving lane.

WilkeJ: /* {{SpanID|620.2.22}}620.2.22 Lane-Use Arrows (MUTCD Section 3B.23) */

2025-12-01T14:32:44Z

{{SpanID|620.2.22}}620.2.22 Lane-Use Arrows (MUTCD Section 3B.23)

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	The placement of arrows in channelizing lanes should be determined by the length of the lane and the following criteria (see [[#fig620.2.22.3\|Figure 620.2.22.3]]):		The placement of arrows in channelizing lanes should be determined by the length of the lane and the following criteria (see [[#fig620.2.22.3\|Figure 620.2.22.3]]):
	:A The first arrow should be placed 75 ft. in advance of the stop line.		:A. The first arrow should be placed 75 ft. in advance of the stop line.
	:B The second arrow should be placed 200 ft. in advance of the stop line.		:B. The second arrow should be placed 200 ft. in advance of the stop line.
	:C Any additional arrows should be placed in 200 ft. increments.		:C. Any additional arrows should be placed in 200 ft. increments.

	The distances between arrows may be adjusted if there are special circumstances that warrant the change.		The distances between arrows may be adjusted if there are special circumstances that warrant the change.

WilkeJ: /* {{SpanID|620.2.22}}620.2.22 Lane-Use Arrows (MUTCD Section 3B.23) */

2025-12-01T14:32:00Z

{{SpanID|620.2.22}}620.2.22 Lane-Use Arrows (MUTCD Section 3B.23)

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	{{SpanID\|fig3b22}}		{{SpanID\|fig3b22}}
	[[File:Figure 620.2.22.2 Examples of ~~Lane~~-Use Control Word and Arrow Pavement Markingsv2.png\|thumb\|center\|600px\|alt="A vertical five-lane roadway is shown with two lanes of through traffic in each direction and a center lane used for left turns in opposing directions.		[[File:Figure 620.2.22.2 Examples of lane-Use Control Word and Arrow Pavement Markingsv2.png\|thumb\|center\|600px\|alt="A vertical five-lane roadway is shown with two lanes of through traffic in each direction and a center lane used for left turns in opposing directions.
	A horizontal roadway is shown, which intersects the vertical one, with two lanes in each direction on the left side of the intersection and only one lane in each direction on the right side of the intersection. A solid double yellow line is shown separating lanes in opposing directions. Crosswalks are shown by parallel white lines across all four corners of both roadways. Wide solid white stop lines are shown in advance of the crosswalks. On the vertical roadway, the center left-turn lane is shown separated from the adjacent through lane in the same direction by a solid white line. The beginning of the left-turn lane is shown by a solid double yellow line that angles from the broken white line between lanes to the solid double yellow line that separates the turn lane from the oncoming lanes. The area formed by these yellow lines is shown with yellow diagonal crosshatch markings. On the south side of the intersection on the vertical roadway, the double yellow line to the left of the left-turn lane and the solid white line on the right of the left-turn lane are shown extending into the intersection (starting beyond the crosswalk on the south side of the intersection) as an optional, single broken yellow and broken white lines, respectively. They are shown curving to the left to prescribe a path leading into the leftmost westbound through lane of the horizontal roadway (ending at the crosswalk on the west side of the intersection). On the south side of the vertical roadway, solid white left-turn arrows are shown in the left-turn lane, combined left-turn and through arrows are shown in the middle lane, and combined right-turn and through arrows are shown in the right lane. Combined right-turn and through arrows on the north side of the intersection on the vertical roadway are denoted as “optional.” The center left-turn lane is shown separated from the adjacent through lane in the same direction by a solid white line, with a dotted white line extension in advance of the solid white line. The beginning of the left-turn lane is shown by a solid double yellow line that angles from the broken white line between lanes to the solid double yellow line that separates the turn lane from the oncoming lanes. The area formed by these yellow lines is shown with yellow diagonal crosshatch markings. On the horizontal roadway, on the west side of the intersection, two lanes in the eastbound direction are shown separated with a solid white line. The left lane is shown with combined left-turn and through arrows marked as “optional.” The right lane is shown with a dotted white lane line in advance of the solid white line and two solid white right-turn arrows. Before each of the two right-turn arrows, the word “ONLY” in large white letters is shown.		A horizontal roadway is shown, which intersects the vertical one, with two lanes in each direction on the left side of the intersection and only one lane in each direction on the right side of the intersection. A solid double yellow line is shown separating lanes in opposing directions. Crosswalks are shown by parallel white lines across all four corners of both roadways. Wide solid white stop lines are shown in advance of the crosswalks. On the vertical roadway, the center left-turn lane is shown separated from the adjacent through lane in the same direction by a solid white line. The beginning of the left-turn lane is shown by a solid double yellow line that angles from the broken white line between lanes to the solid double yellow line that separates the turn lane from the oncoming lanes. The area formed by these yellow lines is shown with yellow diagonal crosshatch markings. On the south side of the intersection on the vertical roadway, the double yellow line to the left of the left-turn lane and the solid white line on the right of the left-turn lane are shown extending into the intersection (starting beyond the crosswalk on the south side of the intersection) as an optional, single broken yellow and broken white lines, respectively. They are shown curving to the left to prescribe a path leading into the leftmost westbound through lane of the horizontal roadway (ending at the crosswalk on the west side of the intersection). On the south side of the vertical roadway, solid white left-turn arrows are shown in the left-turn lane, combined left-turn and through arrows are shown in the middle lane, and combined right-turn and through arrows are shown in the right lane. Combined right-turn and through arrows on the north side of the intersection on the vertical roadway are denoted as “optional.” The center left-turn lane is shown separated from the adjacent through lane in the same direction by a solid white line, with a dotted white line extension in advance of the solid white line. The beginning of the left-turn lane is shown by a solid double yellow line that angles from the broken white line between lanes to the solid double yellow line that separates the turn lane from the oncoming lanes. The area formed by these yellow lines is shown with yellow diagonal crosshatch markings. On the horizontal roadway, on the west side of the intersection, two lanes in the eastbound direction are shown separated with a solid white line. The left lane is shown with combined left-turn and through arrows marked as “optional.” The right lane is shown with a dotted white lane line in advance of the solid white line and two solid white right-turn arrows. Before each of the two right-turn arrows, the word “ONLY” in large white letters is shown.
	"		"
	\|'''Figure 620.2.22.2''' Examples of ~~lane~~-Use Control Word and Arrow Pavement Markings]]		\|'''Figure 620.2.22.2''' Examples of Lane-Use Control Word and Arrow Pavement Markings]]

	'''Support.''' Lane-use arrow markings (see [[#fig3b21\|Figure 620.2.22.1]]) are used to indicate the mandatory or permissible movements in certain lanes (see [[#fig3b22\|Figure 620.2.22.2]]) and in two-way left-turn lanes (see [[#fig3b7\|Figure 620.2.20]]).		'''Support.''' Lane-use arrow markings (see [[#fig3b21\|Figure 620.2.22.1]]) are used to indicate the mandatory or permissible movements in certain lanes (see [[#fig3b22\|Figure 620.2.22.2]]) and in two-way left-turn lanes (see [[#fig3b7\|Figure 620.2.20]]).

WilkeJ: /* {{SpanID|620.2.22}}620.2.22 Lane-Use Arrows (MUTCD Section 3B.23) */

2025-12-01T14:30:48Z

{{SpanID|620.2.22}}620.2.22 Lane-Use Arrows (MUTCD Section 3B.23)

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	{{SpanID\|fig3b22}}		{{SpanID\|fig3b22}}
	[[File:Figure 620.2.22.2 Examples of ~~lane~~-Use Control Word and Arrow Pavement Markingsv2.png\|thumb\|center\|600px\|alt="A vertical five-lane roadway is shown with two lanes of through traffic in each direction and a center lane used for left turns in opposing directions.		[[File:Figure 620.2.22.2 Examples of Lane-Use Control Word and Arrow Pavement Markingsv2.png\|thumb\|center\|600px\|alt="A vertical five-lane roadway is shown with two lanes of through traffic in each direction and a center lane used for left turns in opposing directions.
	A horizontal roadway is shown, which intersects the vertical one, with two lanes in each direction on the left side of the intersection and only one lane in each direction on the right side of the intersection. A solid double yellow line is shown separating lanes in opposing directions. Crosswalks are shown by parallel white lines across all four corners of both roadways. Wide solid white stop lines are shown in advance of the crosswalks. On the vertical roadway, the center left-turn lane is shown separated from the adjacent through lane in the same direction by a solid white line. The beginning of the left-turn lane is shown by a solid double yellow line that angles from the broken white line between lanes to the solid double yellow line that separates the turn lane from the oncoming lanes. The area formed by these yellow lines is shown with yellow diagonal crosshatch markings. On the south side of the intersection on the vertical roadway, the double yellow line to the left of the left-turn lane and the solid white line on the right of the left-turn lane are shown extending into the intersection (starting beyond the crosswalk on the south side of the intersection) as an optional, single broken yellow and broken white lines, respectively. They are shown curving to the left to prescribe a path leading into the leftmost westbound through lane of the horizontal roadway (ending at the crosswalk on the west side of the intersection). On the south side of the vertical roadway, solid white left-turn arrows are shown in the left-turn lane, combined left-turn and through arrows are shown in the middle lane, and combined right-turn and through arrows are shown in the right lane. Combined right-turn and through arrows on the north side of the intersection on the vertical roadway are denoted as “optional.” The center left-turn lane is shown separated from the adjacent through lane in the same direction by a solid white line, with a dotted white line extension in advance of the solid white line. The beginning of the left-turn lane is shown by a solid double yellow line that angles from the broken white line between lanes to the solid double yellow line that separates the turn lane from the oncoming lanes. The area formed by these yellow lines is shown with yellow diagonal crosshatch markings. On the horizontal roadway, on the west side of the intersection, two lanes in the eastbound direction are shown separated with a solid white line. The left lane is shown with combined left-turn and through arrows marked as “optional.” The right lane is shown with a dotted white lane line in advance of the solid white line and two solid white right-turn arrows. Before each of the two right-turn arrows, the word “ONLY” in large white letters is shown.		A horizontal roadway is shown, which intersects the vertical one, with two lanes in each direction on the left side of the intersection and only one lane in each direction on the right side of the intersection. A solid double yellow line is shown separating lanes in opposing directions. Crosswalks are shown by parallel white lines across all four corners of both roadways. Wide solid white stop lines are shown in advance of the crosswalks. On the vertical roadway, the center left-turn lane is shown separated from the adjacent through lane in the same direction by a solid white line. The beginning of the left-turn lane is shown by a solid double yellow line that angles from the broken white line between lanes to the solid double yellow line that separates the turn lane from the oncoming lanes. The area formed by these yellow lines is shown with yellow diagonal crosshatch markings. On the south side of the intersection on the vertical roadway, the double yellow line to the left of the left-turn lane and the solid white line on the right of the left-turn lane are shown extending into the intersection (starting beyond the crosswalk on the south side of the intersection) as an optional, single broken yellow and broken white lines, respectively. They are shown curving to the left to prescribe a path leading into the leftmost westbound through lane of the horizontal roadway (ending at the crosswalk on the west side of the intersection). On the south side of the vertical roadway, solid white left-turn arrows are shown in the left-turn lane, combined left-turn and through arrows are shown in the middle lane, and combined right-turn and through arrows are shown in the right lane. Combined right-turn and through arrows on the north side of the intersection on the vertical roadway are denoted as “optional.” The center left-turn lane is shown separated from the adjacent through lane in the same direction by a solid white line, with a dotted white line extension in advance of the solid white line. The beginning of the left-turn lane is shown by a solid double yellow line that angles from the broken white line between lanes to the solid double yellow line that separates the turn lane from the oncoming lanes. The area formed by these yellow lines is shown with yellow diagonal crosshatch markings. On the horizontal roadway, on the west side of the intersection, two lanes in the eastbound direction are shown separated with a solid white line. The left lane is shown with combined left-turn and through arrows marked as “optional.” The right lane is shown with a dotted white lane line in advance of the solid white line and two solid white right-turn arrows. Before each of the two right-turn arrows, the word “ONLY” in large white letters is shown.
	"		"

WilkeJ: /* {{SpanID|620.2.3}}620.2.3 No-Passing Zone Pavement Markings (MUTCD Section 3B.03) */

2025-11-26T18:59:40Z

{{SpanID|620.2.3}}620.2.3 No-Passing Zone Pavement Markings (MUTCD Section 3B.03)

← Older revision		Revision as of 13:59, 26 November 2025
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	<center>		<center>
	{\| class="wikitable" style="text-align: center;"		{\| class="wikitable" style="text-align: center;"
	\|+ Table 620.2.3		\|+ '''Table 620.2.3''' Minimum Passing Sight
			Distances for No-Passing Zone Markings
	\|-		\|-
	! 85th-Percentile or Speed Limit !! Minimum Passing Sight Distance		! 85th-Percentile or Speed Limit !! Minimum Passing Sight Distance

WilkeJ: /* {{SpanID|620.2.3}}620.2.3 No-Passing Zone Pavement Markings (MUTCD Section 3B.03) */

2025-11-26T18:12:54Z

{{SpanID|620.2.3}}620.2.3 No-Passing Zone Pavement Markings (MUTCD Section 3B.03)

← Older revision		Revision as of 13:12, 26 November 2025
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	'''Standard. '''On three-lane roadways where the direction of travel in the center lane transitions from one direction to the other, a no-passing buffer zone, consisting of a flush median island (see [[620.9 Marking and Delineation of Islands and Sidewalk Extensions (MUTCD Chapter 3J)#620.9.3\| EPG 620.9.3]]) at least 50 feet in length, shall be provided in the center lane as shown in [[#~~fig620.2.3.3~~\|Figure 620.2.3.3]]. A lane-reduction transition (see [[#620.2.14\|EPG 620.2.14]]) shall be provided approaching each end of the buffer zone.		'''Standard. '''On three-lane roadways where the direction of travel in the center lane transitions from one direction to the other, a no-passing buffer zone, consisting of a flush median island (see [[620.9 Marking and Delineation of Islands and Sidewalk Extensions (MUTCD Chapter 3J)#620.9.3\| EPG 620.9.3]]) at least 50 feet in length, shall be provided in the center lane as shown in [[#fig3b5\|Figure 620.2.3.3]]. A lane-reduction transition (see [[#620.2.14\|EPG 620.2.14]]) shall be provided approaching each end of the buffer zone.

	On multi-lane, undivided roadways with two or more lanes in each direction, a minimum of one double yellow center line shall be used to separate the opposing directions of travel. If pavement width is available, the preferred center line marking would provide a painted median formed by two double yellow center lines separated by a minimum of 12 inches to provide greater separation between opposing lanes of travel.		On multi-lane, undivided roadways with two or more lanes in each direction, a minimum of one double yellow center line shall be used to separate the opposing directions of travel. If pavement width is available, the preferred center line marking would provide a painted median formed by two double yellow center lines separated by a minimum of 12 inches to provide greater separation between opposing lanes of travel.
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	On added uphill truck lanes, a no-passing zone marking shall be provided for the entire length of the ascending direction of travel.		On added uphill truck lanes, a no-passing zone marking shall be provided for the entire length of the ascending direction of travel.

	For the descending direction of travel, no-passing zone markings shall be provided for a minimum length of 500 feet or ½ the taper length (L), whichever is greater, in advance of and beyond the location where the uphill truck lane becomes full width (see [[#~~fig620.2.3.3~~\|Figure 620.2.3.3]]). The length of any no-passing zone related to an uphill truck lane segment shall be increased to address sight distance limitations or based on engineering judgement.		For the descending direction of travel, no-passing zone markings shall be provided for a minimum length of 500 feet or ½ the taper length (L), whichever is greater, in advance of and beyond the location where the uphill truck lane becomes full width (see [[#fig3b5\|Figure 620.2.3.3]]). The length of any no-passing zone related to an uphill truck lane segment shall be increased to address sight distance limitations or based on engineering judgement.

	'''Option.''' A passing zone may be provided in the descending direction of travel within the uphill truck lane full-width segment being based on available sight distance and engineering judgement.		'''Option.''' A passing zone may be provided in the descending direction of travel within the uphill truck lane full-width segment being based on available sight distance and engineering judgement.