910.3 Dynamic Message Signs (DMS) - Revision history

WilkeJ: /* 910.3.2.17 On-Site Control of Changeable Message Signs */

2025-11-21T16:55:22Z

910.3.2.17 On-Site Control of Changeable Message Signs

← Older revision		Revision as of 11:55, 21 November 2025
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	The safety messages will provide variety and guard against message boredom. Higher priority messages, as provided in [[910.3 Dynamic Message Signs (DMS)#910.3.2.3 Message Priorities\|EPG 910.3.2.3 Message Priorities]], will always override the general messages. Special messages will be placed on the DMSs as needed. [http://sharepoint/systemdelivery/tr/Pages/default.aspx Traffic] staff will regularly monitor the DMS usage.		The safety messages will provide variety and guard against message boredom. Higher priority messages, as provided in [[910.3 Dynamic Message Signs (DMS)#910.3.2.3 Message Priorities\|EPG 910.3.2.3 Message Priorities]], will always override the general messages. Special messages will be placed on the DMSs as needed. [http://sharepoint/systemdelivery/tr/Pages/default.aspx Traffic] staff will regularly monitor the DMS usage.

	===910.3.2.17 On-Site Control of Changeable Message Signs===		===910.3.2.17 On-Site Control of Portable Changeable Message Signs===

	Portable Changeable Message Signs (CMSs) are normally used by MoDOT personnel or contractors to post information regarding construction or maintenance projects. To the maximum extent practicable, CMS messages should follow the provisions of [[616.12 Other TTC Zone Traffic Control Devices (MUTCD Chapter 6L)#616.12.5\|EPG 616.12.5 ~~Portable Changeable Message Signs (CMSs)~~]].		Portable Changeable Message Signs (CMSs) are normally used by MoDOT personnel or contractors to post information regarding construction or maintenance projects. To the maximum extent practicable, CMS messages should follow the provisions of [[616.12 Other TTC Zone Traffic Control Devices (MUTCD Chapter 6L)#616.12.5\|EPG 616.12.5]].

	Particularly in the Kansas City and St. Louis metropolitan areas, CMSs can be used to supplement the messages posted on the KC Scout and Gateway Guide DMSs. If these CMSs are to be useful in supplementing messages on DMSs, close coordination is needed between the TMC operators and those responsible for operating the CMSs to ensure that the DMSs and CMSs are not located too closely together and that that the messages don’t conflict.		Particularly in the Kansas City and St. Louis metropolitan areas, CMSs can be used to supplement the messages posted on the KC Scout and Gateway Guide DMSs. If these CMSs are to be useful in supplementing messages on DMSs, close coordination is needed between the TMC operators and those responsible for operating the CMSs to ensure that the DMSs and CMSs are not located too closely together and that that the messages don’t conflict.

	[[Category:910 Intelligent Transportation Systems]]		[[Category:910 Intelligent Transportation Systems]]

HogsettC: /* 910.3.2.15 Child Abduction, Blue Alert and Ozone Alert Messages */

2025-11-20T15:45:21Z

910.3.2.15 Child Abduction, Blue Alert and Ozone Alert Messages

← Older revision		Revision as of 10:45, 20 November 2025
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	:* Words or messages should never be flashed.		:* Words or messages should never be flashed.

	===910.3.2.15 Child Abduction, Blue Alert and Ozone Alert Messages===		==={{SpanID\|910.3.2.15}}910.3.2.15 Child Abduction, Blue Alert and Ozone Alert Messages===

	If a child abduction occurs and it meets the local AMBER Plan Program’s criteria for triggering an alert, a child abduction alert (AMBER Alert) message should be displayed on all stationary DMS in the area of the abduction, but should not create adverse traffic impacts such as queues, unexpected slowing of traffic, etc. If a higher priority message is needed on a DMS, then a child abduction alert messages should be alternated with that message until the child abduction alert is cancelled.		If a child abduction occurs and it meets the local AMBER Plan Program’s criteria for triggering an alert, a child abduction alert (AMBER Alert) message should be displayed on all stationary DMS in the area of the abduction, but should not create adverse traffic impacts such as queues, unexpected slowing of traffic, etc. If a higher priority message is needed on a DMS, then a child abduction alert messages should be alternated with that message until the child abduction alert is cancelled.

WilkeJ: /* {{SpanID|910.3.2.6}}910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08) */

2025-11-17T20:46:19Z

{{SpanID|910.3.2.6}}910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)

← Older revision		Revision as of 15:46, 17 November 2025
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	:E. Not be located in areas where drivers frequently perform lane-changing maneuvers in response to guide sign information, or because of merging or weaving conditions.		:E. Not be located in areas where drivers frequently perform lane-changing maneuvers in response to guide sign information, or because of merging or weaving conditions.

	'''Support. '''Many of the factors in locating permanently-located CMS or DMS apply to PCMS. Information regarding the design and application of PCMS in temporary traffic control zones is contained in [[616.12 ~~Portable Changeable Message Signs~~ (MUTCD Chapter 6L)#616.12.5#EPG 616.12.5]].		'''Support. '''Many of the factors in locating permanently-located CMS or DMS apply to PCMS. Information regarding the design and application of PCMS in temporary traffic control zones is contained in [[616.12 Other TTC Zone Traffic Control Devices (MUTCD Chapter 6L)#616.12.5\|EPG 616.12.5]].

	==={{SpanID\|910.3.2.7}}910.3.2.7 Message Creation and Termination===		==={{SpanID\|910.3.2.7}}910.3.2.7 Message Creation and Termination===

WilkeJ: /* {{SpanID|910.3.2.6}}910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08) */

2025-11-17T20:45:15Z

{{SpanID|910.3.2.6}}910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)

← Older revision		Revision as of 15:45, 17 November 2025
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	:E. Not be located in areas where drivers frequently perform lane-changing maneuvers in response to guide sign information, or because of merging or weaving conditions.		:E. Not be located in areas where drivers frequently perform lane-changing maneuvers in response to guide sign information, or because of merging or weaving conditions.

	'''Support. '''Many of the factors in locating permanently-located CMS or DMS apply to PCMS. Information regarding the design and application of PCMS in temporary traffic control zones is contained in ~~Section~~ 6L.05.		'''Support. '''Many of the factors in locating permanently-located CMS or DMS apply to PCMS. Information regarding the design and application of PCMS in temporary traffic control zones is contained in [[616.12 Portable Changeable Message Signs (MUTCD Chapter 6L)#616.12.5#EPG 616.12.5]].

	==={{SpanID\|910.3.2.7}}910.3.2.7 Message Creation and Termination===		==={{SpanID\|910.3.2.7}}910.3.2.7 Message Creation and Termination===

WilkeJ: /* 910.3.1 DMS Policy */

2025-11-17T20:42:03Z

910.3.1 DMS Policy

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	==910.3.1 DMS Policy==		==910.3.1 DMS Policy==

	Policies, standards, and guidelines for DMS signs are included in ~~[[#\|~~EPG 910.3]] and in [[903.12 Changeable Message Signs (MUTCD Chapter 2L)\|EPG 903.12]] for Changeable Message Signs. Content in [[903.12 Changeable Message Signs (MUTCD Chapter 2L)\|EPG 903.12]] includes applicable language from the Manual on Uniform Traffic Control Devices.		Policies, standards, and guidelines for DMS signs are included in EPG 910.3 and in [[903.12 Changeable Message Signs (MUTCD Chapter 2L)\|EPG 903.12]] for Changeable Message Signs. Content in [[903.12 Changeable Message Signs (MUTCD Chapter 2L)\|EPG 903.12]] includes applicable language from the Manual on Uniform Traffic Control Devices.

	==910.3.2 MoDOT DMS Policy==		==910.3.2 MoDOT DMS Policy==

WilkeJ: /* 910.3.2.5 Legibility and Visibility of DMS */

2025-11-17T20:40:40Z

910.3.2.5 Legibility and Visibility of DMS

← Older revision		Revision as of 15:40, 17 November 2025
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	===910.3.2.5 Legibility and Visibility of DMS===		===910.3.2.5 Legibility and Visibility of DMS===

	'''Support. '''[[903.12 Changeable Message Signs (MUTCD Chapter 2L)#903.12.3\|EPG 903.12.3]] contains information from the MUTCD regarding Legibility and Visibility ~~of DMS~~.		'''Support. '''[[903.12 Changeable Message Signs (MUTCD Chapter 2L)#903.12.3\|EPG 903.12.3]] contains information from the MUTCD regarding Legibility and Visibility.

	==={{SpanID\|910.3.2.6}}910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)===		==={{SpanID\|910.3.2.6}}910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)===

TaracksA: /* 910.3.2.7 Message Creation and Termination */

2025-11-17T19:04:44Z

910.3.2.7 Message Creation and Termination

← Older revision		Revision as of 14:04, 17 November 2025
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	'''Support. '''Many of the factors in locating permanently-located CMS or DMS apply to PCMS. Information regarding the design and application of PCMS in temporary traffic control zones is contained in Section 6L.05.		'''Support. '''Many of the factors in locating permanently-located CMS or DMS apply to PCMS. Information regarding the design and application of PCMS in temporary traffic control zones is contained in Section 6L.05.

	===910.3.2.7 Message Creation and Termination===		==={{SpanID\|910.3.2.7}}910.3.2.7 Message Creation and Termination===

	Although it is desirable to post an incident message based on complete and perfect information, situations often occur when the operator has received only limited information on the incident from reliable sources, particularly in the early stages of the incident. In these situations, operators should determine if there is at least general information about the incident location and type. If so, the operator should post a message with the information available and be prepared to modify the message as soon as more detailed information is received.		Although it is desirable to post an incident message based on complete and perfect information, situations often occur when the operator has received only limited information on the incident from reliable sources, particularly in the early stages of the incident. In these situations, operators should determine if there is at least general information about the incident location and type. If so, the operator should post a message with the information available and be prepared to modify the message as soon as more detailed information is received.

TaracksA: /* 910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08) */

2025-11-17T19:03:30Z

910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)

← Older revision		Revision as of 14:03, 17 November 2025
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	'''Support. '''[[903.12 Changeable Message Signs (MUTCD Chapter 2L)#903.12.3\|EPG 903.12.3]] contains information from the MUTCD regarding Legibility and Visibility of DMS.		'''Support. '''[[903.12 Changeable Message Signs (MUTCD Chapter 2L)#903.12.3\|EPG 903.12.3]] contains information from the MUTCD regarding Legibility and Visibility of DMS.

	===910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)===		==={{SpanID\|910.3.2.6}}910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)===
	'''Support. '''Dynamic message signs (DMS) are permanently-located changeable message signs. [[903.12 Changeable Message Signs (MUTCD Chapter 2L)\|EPG 903.12]] contains provisions from the MUTCD regarding all changeable message signs. The provisions of EPG 910.3.2.6 apply to DMS and other permanently-located CMS.		'''Support. '''Dynamic message signs (DMS) are permanently-located changeable message signs. [[903.12 Changeable Message Signs (MUTCD Chapter 2L)\|EPG 903.12]] contains provisions from the MUTCD regarding all changeable message signs. The provisions of EPG 910.3.2.6 apply to DMS and other permanently-located CMS.

TaracksA at 18:57, 17 November 2025

2025-11-17T18:57:28Z

← Older revision		Revision as of 13:57, 17 November 2025
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	\|'''Related Information'''		\|'''Related Information'''
	\|-		\|-
	\|[~~https://epg.modot.org/index.php?title=~~616.~~6_Temporary_Traffic_Control_Zone_Devices_%28MUTCD_6F%29~~#616.~~6.60_Portable_Changeable_Message_Signs_.28MUTCD_6F.60~~.29 '''Portable Changeable Message Signs (CMS)''']		\|[[616.12 Other TTC Zone Traffic Control Devices (MUTCD Chapter 6L)#616.12.5\|'''Portable Changeable Message Signs (CMS)''']]
	\|}		\|}
	'''Support.''' Dynamic Message Signs (DMSs) are stationary traffic control devices capable of displaying one or more alternative messages that provide travelers with real-time, traffic-related variable messages. DMSs are used to warn, regulate, route and manage traffic.		'''Support.''' Dynamic Message Signs (DMSs) are stationary traffic control devices capable of displaying one or more alternative messages that provide travelers with real-time, traffic-related variable messages. DMSs are used to warn, regulate, route and manage traffic.

WilkeJ: /* 910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08) */

2025-11-17T18:50:45Z

910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)

← Older revision		Revision as of 13:50, 17 November 2025
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	===910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)===		===910.3.2.6 Permanently-Located Changeable Message Signs (DMS) (MUTCD Section 2L.08)===
	'''Support. '''Dynamic message signs (DMS) are permanently-located changeable message signs. [[903.12 Changeable Message Signs (MUTCD Chapter 2L)\|EPG 903.12]] ~~contain~~ provisions from the MUTCD regarding all changeable message signs. The provisions of EPG 910.3 apply to DMS and other permanently-located CMS.		'''Support. '''Dynamic message signs (DMS) are permanently-located changeable message signs. [[903.12 Changeable Message Signs (MUTCD Chapter 2L)\|EPG 903.12]] contains provisions from the MUTCD regarding all changeable message signs. The provisions of EPG 910.3.2.6 apply to DMS and other permanently-located CMS.

	Careful consideration of CMS or DMS installation location is important to having a safe and effective message, taking into account several factors. CMS or DMS message length and complexity will vary and often include two-phase displays, all of which might require longer glance times by motorists than would be required for conventional sign messages.		Careful consideration of CMS or DMS installation location is important to having a safe and effective message, taking into account several factors. CMS or DMS message length and complexity will vary and often include two-phase displays, all of which might require longer glance times by motorists than would be required for conventional sign messages.