903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) - Revision history

Hoskir: /* {{SpanID|903.2.21}}903.2.21 Combined Maximum and Minimum Speed Limits Sign (R2-4a) (MUTCD Section 2B.24) */ updated per RR4199

2026-04-16T19:41:28Z

{{SpanID|903.2.21}}903.2.21 Combined Maximum and Minimum Speed Limits Sign (R2-4a) (MUTCD Section 2B.24): updated per RR4199

← Older revision		Revision as of 14:41, 16 April 2026
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	=={{SpanID\|903.2.21}}903.2.21 Combined Maximum and Minimum Speed Limits Sign (R2-4a) (MUTCD Section 2B.24)==		=={{SpanID\|903.2.21}}903.2.21 Combined Maximum and Minimum Speed Limits Sign (R2-4a) (MUTCD Section 2B.24)==

	~~{\| style="margin: 1em auto 1em auto"~~		[[image:R2-4a.png\|center\|thumb\|150px\|<center>'''R2-4a'''</center>]]
	\|-
	\|[[image:R2-4a.png\|~~left~~\|thumb\|150px\|<center>'''R2-4a'''</center>]]
	\|}

	'''~~Standard~~. '''~~Combined Maximum and Minimum~~ Speed ~~Limits~~ (R2-4a) ~~signs shall be~~ installed ~~only~~ on ~~interstate routes~~ in ~~lieu of Speed Limit (R2-1) signs to designate the maximum and minimum speed limits that apply~~.		'''Support.''' Interstate routes are the only roadways in Missouri where there is a minimum speed limit established by state statute. As such, Combination Speed Limit Signs (R2-4a) are not installed on any other route type in Missouri.

	'''Guidance. '''The Combined Maximum and Minimum Speed Limits sign should be located in the same manner as Speed Limit signs (See ~~[[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.9\|~~EPG 903.2.9]]). ~~Additionally~~, the R2-4a ~~sign should~~ be installed ~~on interstate routes~~ at ~~entrances~~ to ~~Missouri~~ and ~~where~~ interstate routes ~~cross county lines~~. ~~'''~~		'''Guidance.''' The R2-4a sign should be installed on interstate routes at state lines and where interstate routes cross county lines. The Combined Maximum and Minimum Speed Limits sign should be located in the same manner as Speed Limit signs (See EPG 903.2.9).

			'''Option.''' Where engineering judgment determines that slow speeds on an interstate might impede the normal and reasonable movement of traffic, the R2-4a may be installed at additional locations to indicate the minimum legal speed.

			'''Standard.''' Combined Maximum and Minimum Speed Limits (R2-4a) signs shall be installed on interstate routes.

	=={{SpanID\|903.2.22}}903.2.22 Speed Limit XX Except Where Posted Sign (R2-5d)==		=={{SpanID\|903.2.22}}903.2.22 Speed Limit XX Except Where Posted Sign (R2-5d)==

Hoskir: fixed link error

2026-03-13T18:31:29Z

fixed link error

← Older revision		Revision as of 13:31, 13 March 2026
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	'''Guidance. '''The seat belt symbol should not be used alone. If used, the seat belt symbol should be incorporated into regulatory sign messages for mandatory seat belt use.		'''Guidance. '''The seat belt symbol should not be used alone. If used, the seat belt symbol should be incorporated into regulatory sign messages for mandatory seat belt use.

	'''Support. '''The seat belt symbol is illustrated in the FHWA “Standard Highway Signs” publication (see [[Category:911_General_(MUTCD_Part_1)#Relation_to_Other_Publications_(MUTCD_Section_1A.05)\|EPG 911 (MUTCD Section 1A.05)]]).		'''Support. '''The seat belt symbol is illustrated in the FHWA “Standard Highway Signs” publication (see [[:Category:911_General_(MUTCD_Part_1)#Relation_to_Other_Publications_(MUTCD_Section_1A.05)\|EPG 911 (MUTCD Section 1A.05)]]).

	'''Guidance. '''The R16-2, R16-3, R16-24, R16-27, and R16-27a seatbelt signs have been discontinued. These signs should remain in place to the end of their service life.		'''Guidance. '''The R16-2, R16-3, R16-24, R16-27, and R16-27a seatbelt signs have been discontinued. These signs should remain in place to the end of their service life.

Hoskir: /* {{SpanID|903.2.3}}903.2.3 Size of Regulatory Signs (MUTCD Section 2B.03) */ updated link to brake muffler signing

2026-02-18T13:36:40Z

{{SpanID|903.2.3}}903.2.3 Size of Regulatory Signs (MUTCD Section 2B.03): updated link to brake muffler signing

← Older revision		Revision as of 08:36, 18 February 2026
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	! style="text-align:left;"\| Engine Brake Muffler Required		! style="text-align:left;"\| Engine Brake Muffler Required
	\| R5-23		\| R5-23
	\| -		\| [[903.2_Regulatory_Signs_and_Barricades_(MUTCD_Chapter_2B)#903.2.64_Engine_Brake_Muffler_Required_Signing\|903.2.64]]
	\| 30 X 30		\| 30 X 30
	\| -		\| -

Hoskir: /* {{SpanID|903.2.59}}903.2.59 Seat Belt Symbol (MUTCD Section 2B.74) */ fixed error due to MUTCD update

2026-01-23T18:16:21Z

{{SpanID|903.2.59}}903.2.59 Seat Belt Symbol (MUTCD Section 2B.74): fixed error due to MUTCD update

← Older revision		Revision as of 13:16, 23 January 2026
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	The STATE LAW BUCKLE UP PHONE DOWN (R16-30) sign should be installed at the end of the on ramp of rest areas and Missouri Welcome Centers on the interstate system. The STATE LAW BUCKLE UP PHONE DOWN (R16-30a) sign should be installed on Interstate and U.S. Routes at the state line entering Missouri. Neither sign should be installed at any other location along a roadway.		The STATE LAW BUCKLE UP PHONE DOWN (R16-30) sign should be installed at the end of the on ramp of rest areas and Missouri Welcome Centers on the interstate system. The STATE LAW BUCKLE UP PHONE DOWN (R16-30a) sign should be installed on Interstate and U.S. Routes at the state line entering Missouri. Neither sign should be installed at any other location along a roadway.

	'''Support. '''A growing number of cities and counties are passing local ordinances to make seat belt usage a primary law in their communities. To promote the use of seat belts a PRIMARY SEAT BELT CITY / COUNTY - ORDINANCE sign may be installed by MoDOT upon request.		'''Support. '''A growing number of cities and counties are passing local ordinances to make seat belt usage a primary law in their communities. To promote the use of seat belts a PRIMARY SEAT BELT CITY / COUNTY - ORDINANCE (R16-27b) sign may be installed by MoDOT upon request.

	'''Standard. '''If a city/county has an established primary seat belt ordinance, MoDOT will install PRIMARY SEAT BELT CITY / COUNTY - ORDINANCE signs upon request once a copy of the ordinance has been received. When the PRIMARY SEAT BELT CITY / COUNTY - ORDINANCE is installed they shall be mounted to the right of the city limit sign or the entering county line sign.		'''Standard. '''If a city/county has an established primary seat belt ordinance, MoDOT will install PRIMARY SEAT BELT CITY / COUNTY - ORDINANCE (R16-27b) signs upon request once a copy of the ordinance has been received. When the PRIMARY SEAT BELT CITY / COUNTY - ORDINANCE (R16-27b) is installed they shall be mounted to the right of the city limit sign or the entering county line sign.

	'''Option. '''If insufficient space is available to mount the assembly to the right of these signs, the assembly shall be installed 200 ft. downstream of the city limit or county line signs at the appropriate sign spacing.		'''Option. '''If insufficient space is available to mount the assembly to the right of these signs, the assembly shall be installed 200 ft. downstream of the city limit or county line signs at the appropriate sign spacing.

Hoskir: /* {{SpanID|903.2.20}}903.2.20 Speed Limit Sign (R2-1) (MUTCD Section 2B.21) */ updated broken link due to MUTCD update

2026-01-23T17:23:08Z

{{SpanID|903.2.20}}903.2.20 Speed Limit Sign (R2-1) (MUTCD Section 2B.21): updated broken link due to MUTCD update

← Older revision		Revision as of 12:23, 23 January 2026
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	'''Support. ''' [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.13\|EPG 903.3.13]] contains information about the use of a Vehicle Speed Feedback plaque mounted below a Speed Limit sign that displays to approaching drivers the speed at which they are traveling.		'''Support. ''' [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.13\|EPG 903.3.13]] contains information about the use of a Vehicle Speed Feedback plaque mounted below a Speed Limit sign that displays to approaching drivers the speed at which they are traveling.

	Advisory speed signs and plaques are discussed in [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.12\|EPG 903.3.12]] and [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.59\|903.3.59]]. Temporary traffic control zone speed signs are discussed in [[:Category:616 Temporary Traffic Control (MUTCD Part 6)\|EPG 616]]. The WORK ZONE (G20-5aP) plaque intended for installation above a Speed Limit sign is discussed in [[616.~~7 TTC Zone Regulatory Signs~~ (~~MUTCD Chapter 6G~~) #616.7.7\|EPG 616.7.7]]. School Speed Limit signs are discussed in [[908.2 Signs (MUTCD Chapter 7B) #908.2.5\|EPG 908.2.5]].		Advisory speed signs and plaques are discussed in [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.12\|EPG 903.3.12]] and [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.59\|903.3.59]]. Temporary traffic control zone speed signs are discussed in [[:Category:616 Temporary Traffic Control (MUTCD Part 6)\|EPG 616]]. The WORK ZONE (G20-5aP) plaque intended for installation above a Speed Limit sign is discussed in [[616.7_Temporary_Traffic_Control_Zone_Regulatory_Signs_(MUTCD_Chapter_6G)#616.7.7_Work_Zone_and_Higher_Fines_Signs_and_Plaques_(MUTCD_Section_6G.08)\|EPG 616.7.7]]. School Speed Limit signs are discussed in [[908.2 Signs (MUTCD Chapter 7B) #908.2.5\|EPG 908.2.5]].

	=={{SpanID\|903.2.21}}903.2.21 Combined Maximum and Minimum Speed Limits Sign (R2-4a) (MUTCD Section 2B.24)==		=={{SpanID\|903.2.21}}903.2.21 Combined Maximum and Minimum Speed Limits Sign (R2-4a) (MUTCD Section 2B.24)==

Hoskir: minor error fixes from MUTCD udpate

2026-01-23T15:05:25Z

minor error fixes from MUTCD udpate

← Older revision		Revision as of 10:05, 23 January 2026
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	[[Category:903 Highway Signing (MUTCD Part 2)\|903.02]]		[[Category:903 Highway Signing (MUTCD Part 2)\|903.02]]
	~~{\| align~~="right~~" style="~~margin-left: ~~15px~~; ~~max~~-~~width~~: ~~690px~~;"		<div style="float: right; width: 550px; margin-top: 5px; margin-left: 30px; margin-bottom: 30px;">__TOC__</div>
	\| __TOC__
	\|}
	=={{SpanID\|903.2.1}}903.2.1 Application of Regulatory Signs (MUTCD Section 2B.01)==		=={{SpanID\|903.2.1}}903.2.1 Application of Regulatory Signs (MUTCD Section 2B.01)==

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	\| 120 X 60		\| 120 X 60
	\|-		\|-
	! style="text-align:left;"\| Primary ~~Seatbelt~~ City/~~Country~~		! style="text-align:left;"\| Primary Seat Belt City/County
	\| R16-27B		\| R16-27B
	\| -		\| [[#903.2.59\|903.2.59]]
	\| 30 X 36		\| 30 X 36
	\|		\|

Hoskir: /* {{SpanID|903.2.59}}903.2.59 Seat Belt Symbol (MUTCD Section 2B.74) */ fixed broken link

2026-01-13T16:52:19Z

{{SpanID|903.2.59}}903.2.59 Seat Belt Symbol (MUTCD Section 2B.74): fixed broken link

← Older revision		Revision as of 11:52, 13 January 2026
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	'''Guidance. '''The seat belt symbol should not be used alone. If used, the seat belt symbol should be incorporated into regulatory sign messages for mandatory seat belt use.		'''Guidance. '''The seat belt symbol should not be used alone. If used, the seat belt symbol should be incorporated into regulatory sign messages for mandatory seat belt use.

	'''Support. '''The seat belt symbol is illustrated in the FHWA “Standard Highway Signs” publication (see [[~~911 General~~ (~~MUTCD Part 1~~) #~~911~~.~~1.5~~\|EPG 911 (MUTCD Section 1A.05)]]).		'''Support. '''The seat belt symbol is illustrated in the FHWA “Standard Highway Signs” publication (see [[Category:911_General_(MUTCD_Part_1)#Relation_to_Other_Publications_(MUTCD_Section_1A.05)\|EPG 911 (MUTCD Section 1A.05)]]).

	'''Guidance. '''The R16-2, R16-3, R16-24, R16-27, and R16-27a seatbelt signs have been discontinued. These signs should remain in place to the end of their service life.		'''Guidance. '''The R16-2, R16-3, R16-24, R16-27, and R16-27a seatbelt signs have been discontinued. These signs should remain in place to the end of their service life.

Hoskir: /* {{SpanID|903.2.43}}903.2.43 Design of Parking, Standing, and Stopping Signs (MUTCD Section 2B.53) */ updated broken link

2026-01-13T16:51:17Z

{{SpanID|903.2.43}}903.2.43 Design of Parking, Standing, and Stopping Signs (MUTCD Section 2B.53): updated broken link

← Older revision		Revision as of 11:51, 13 January 2026
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	The R7-201P plaque may have a black or red symbol and border on a white background.		The R7-201P plaque may have a black or red symbol and border on a white background.

	'''Guidance. '''When a legend other than that on the standard parking signs is necessary, letter height, symbol size, and basic sign layout should be consistent with the those shown on the standard parking signs as detailed in the FHWA “Standard Highway Signs” publication (see [[~~911 General~~ (~~MUTCD Part 1~~) #~~911~~.~~1.5~~\|EPG 911 (MUTCD Section 1A.05)]]). '''		'''Guidance. '''When a legend other than that on the standard parking signs is necessary, letter height, symbol size, and basic sign layout should be consistent with the those shown on the standard parking signs as detailed in the FHWA “Standard Highway Signs” publication (see [[:Category:911_General_(MUTCD_Part_1)#Relation_to_Other_Publications_(MUTCD_Section_1A.05)\|EPG 911 (MUTCD Section 1A.05)]]). '''

	In general, the letter height of the principal legend on parking signs sized for urbanized applications should be at least 2 inches.		In general, the letter height of the principal legend on parking signs sized for urbanized applications should be at least 2 inches.

Hoskir: /* {{SpanID|903.2.60}}903.2.60 Barricades (MUTCD Section 2B.75) */ fixed broken link

2026-01-13T15:43:16Z

{{SpanID|903.2.60}}903.2.60 Barricades (MUTCD Section 2B.75): fixed broken link

← Older revision		Revision as of 10:43, 13 January 2026
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	::C. The permanent or semi-permanent closure or termination of a roadway.		::C. The permanent or semi-permanent closure or termination of a roadway.

	'''Standard. '''When used to warn and alert road users of the terminus of a roadway, other than in temporary traffic control zones, barricades shall meet the design criteria of [[616.~~11 TTC Zone Channelizing Devices~~ (~~MUTCD Chapter 6K~~) #616.11.7\|EPG 616.11.7]] for a Type 3 Barricade, except that the colors of the stripes shall be retroreflective white and retroreflective red.		'''Standard. '''When used to warn and alert road users of the terminus of a roadway, other than in temporary traffic control zones, barricades shall meet the design criteria of [[616.11_Temporary_Traffic_Control_Zone_Channelizing_Devices_(MUTCD_Chapter_6K)#616.11.7_Type_1_or_3_Barricades_(MUTCD_Section_6K.07)\|EPG 616.11.7]] for a Type 3 Barricade, except that the colors of the stripes shall be retroreflective white and retroreflective red.

	'''Option. '''An end-of-roadway marker or markers may be used as described in [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.73\|EPG 903.3.73]].		'''Option. '''An end-of-roadway marker or markers may be used as described in [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.73\|EPG 903.3.73]].

Hoskir: /* {{SpanID|903.2.52}}903.2.52 ROAD CLOSED Sign (R11-2) and LOCAL TRAFFIC ONLY Signs (R11-3 and R11-4) (MUTCD Section 2B.63) */ fixed broken link

2026-01-13T15:06:11Z

{{SpanID|903.2.52}}903.2.52 ROAD CLOSED Sign (R11-2) and LOCAL TRAFFIC ONLY Signs (R11-3 and R11-4) (MUTCD Section 2B.63): fixed broken link

← Older revision		Revision as of 10:06, 13 January 2026
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	ROAD CLOSED—LOCAL TRAFFIC ONLY (R11-3) or ROAD CLOSED TO THRU TRAFFIC (R11-4) signs should be used where through traffic is not permitted, or for a closure some distance beyond the sign, but where the highway is open for local traffic up to the point of closure.		ROAD CLOSED—LOCAL TRAFFIC ONLY (R11-3) or ROAD CLOSED TO THRU TRAFFIC (R11-4) signs should be used where through traffic is not permitted, or for a closure some distance beyond the sign, but where the highway is open for local traffic up to the point of closure.

	'''Standard. '''The Road Closed (R11-2, R11-3, and R11-4) signs shall be designed as horizontal rectangles. These signs shall be preceded by the applicable Advance Road Closed warning sign with the secondary legend AHEAD and, if applicable, an Advance Detour warning sign (see [[616.~~8 TTC Zone Warning Signs~~ (~~MUTCD Chapter 6H~~) #616.8.4\|EPG 616.8.4]]).		'''Standard. '''The Road Closed (R11-2, R11-3, and R11-4) signs shall be designed as horizontal rectangles. These signs shall be preceded by the applicable Advance Road Closed warning sign with the secondary legend AHEAD and, if applicable, an Advance Detour warning sign (see [[616.8_Temporary_Traffic_Control_Zone_Warning_Signs_(MUTCD_Chapter_6H)#616.8.4_DETOUR_Sign_(WO20-2)_(MUTCD_Section_6H.04)\|EPG 616.8.4]]).

	=={{SpanID\|903.2.53}}903.2.53 Weight Limit Sign (R12-1) (MUTCD Section 2B.64)==		=={{SpanID\|903.2.53}}903.2.53 Weight Limit Sign (R12-1) (MUTCD Section 2B.64)==

← Older revision		Revision as of 12:23, 23 January 2026
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	'''Support. ''' [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.13\|EPG 903.3.13]] contains information about the use of a Vehicle Speed Feedback plaque mounted below a Speed Limit sign that displays to approaching drivers the speed at which they are traveling.		'''Support. ''' [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.13\|EPG 903.3.13]] contains information about the use of a Vehicle Speed Feedback plaque mounted below a Speed Limit sign that displays to approaching drivers the speed at which they are traveling.

	Advisory speed signs and plaques are discussed in [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.12\|EPG 903.3.12]] and [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.59\|903.3.59]]. Temporary traffic control zone speed signs are discussed in [[:Category:616 Temporary Traffic Control (MUTCD Part 6)\|EPG 616]]. The WORK ZONE (G20-5aP) plaque intended for installation above a Speed Limit sign is discussed in [[616.~~7 TTC Zone Regulatory Signs~~ (~~MUTCD Chapter 6G~~) #616.7.7\|EPG 616.7.7]]. School Speed Limit signs are discussed in [[908.2 Signs (MUTCD Chapter 7B) #908.2.5\|EPG 908.2.5]].		Advisory speed signs and plaques are discussed in [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.12\|EPG 903.3.12]] and [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.59\|903.3.59]]. Temporary traffic control zone speed signs are discussed in [[:Category:616 Temporary Traffic Control (MUTCD Part 6)\|EPG 616]]. The WORK ZONE (G20-5aP) plaque intended for installation above a Speed Limit sign is discussed in [[616.7_Temporary_Traffic_Control_Zone_Regulatory_Signs_(MUTCD_Chapter_6G)#616.7.7_Work_Zone_and_Higher_Fines_Signs_and_Plaques_(MUTCD_Section_6G.08)\|EPG 616.7.7]]. School Speed Limit signs are discussed in [[908.2 Signs (MUTCD Chapter 7B) #908.2.5\|EPG 908.2.5]].

	=={{SpanID\|903.2.21}}903.2.21 Combined Maximum and Minimum Speed Limits Sign (R2-4a) (MUTCD Section 2B.24)==		=={{SpanID\|903.2.21}}903.2.21 Combined Maximum and Minimum Speed Limits Sign (R2-4a) (MUTCD Section 2B.24)==