902.4 Signal Installations and Equipment - Revision history

Hallej1: /* 902.4.2.3 Experimental Equipment */

2022-08-30T15:32:54Z

902.4.2.3 Experimental Equipment

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	'''Guidance.''' MoDOT often evaluates experimental equipment for traffic signals. Experimental equipment can be new products or products that vary considerably from our current standards or practices. The evaluation of experimental products can be initiated by district or Central Office staff, as part of a research project, as an implementation of an employee idea, etc.		'''Guidance.''' MoDOT often evaluates experimental equipment for traffic signals. Experimental equipment can be new products or products that vary considerably from our current standards or practices. The evaluation of experimental products can be initiated by district or Central Office staff, as part of a research project, as an implementation of an employee idea, etc.

	The evaluation of experimental equipment for traffic signals is coordinated through Traffic and may involve other functional units such as ~~Organizational Results~~. If the evaluation is part of a research project, then the project will provide guidelines for testing. Products can be evaluated in a similar manner to that described in EPG 902.4.2.2 Some items to consider before evaluating experimental equipment are as follows:		The evaluation of experimental equipment for traffic signals is coordinated through Traffic and may involve other functional units such as Research. If the evaluation is part of a research project, then the project will provide guidelines for testing. Products can be evaluated in a similar manner to that described in EPG 902.4.2.2 Some items to consider before evaluating experimental equipment are as follows:

	:* What improvement will the equipment provide?		:* What improvement will the equipment provide?

Hallej1: changes per RR#3533

2022-08-12T17:24:34Z

changes per RR#3533

← Older revision		Revision as of 12:24, 12 August 2022
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	An agreement with the Commission for the installation of the traffic signal shall be executed as part of the permit. The standard contract "Agreement for the Installation of a Traffic Signal by Others to be Maintained by the Commission" (TR16) is available.		An agreement with the Commission for the installation of the traffic signal shall be executed as part of the permit. The standard contract "Agreement for the Installation of a Traffic Signal by Others to be Maintained by the Commission" (TR16) is available.

	===902.4.1.2 ~~Permanent Signals===~~		===902.4.1.2 Installation Cost of Signals===

	'''Guidance.''' Permanent signals are installations using steel mast arm poles, underground conduit and basic intersection lighting. Permanent signal installations are preferable to span wire signal installations, but each case is decided on its own merits and the funding available. If field conditions are such, that span wire installations need to be considered coordination with [http://sp/sites/ts/Pages/default.aspx Central Office Highway Safety and Traffic] should occur.

	The signals, lighting and intersection geometrics are constructed according to current Design standards. Permanent signals are typically installed with construction projects or at locations where there are no programmed major roadway projects that would affect the signals.

	~~===902.4.1.3 Span Wire Signals===~~
	~~[[image:902.10.1.2 Span Wire Signals.jpg\|right\|250px\|thumb\|<center>'''Span Wire Signals'''</center>]]~~

	'''Guidance.''' Span wire signals are installed with wood or steel span wire poles and overhead wiring. A steel span wire post is recommended where guy wires for a wood pole cannot be used, especially for long spans.

	Span wire signals can be installed by contract, by MoDOT forces or a combination of the two. Span wire signals are typically installed where signals are needed sooner than permanent signals can be programmed. This can occur where there is a future construction project that will install signals or where there is no work currently programmed. If no work is programmed, it might be advantageous to pursue the programming of a permanent signal installation to replace the span wire signals.

	'''Standard.''' Diagonal span wire signals shall not be used. Span wire signals are to be installed with basic lighting on the signal poles (silhouette lighting) unless other basic lighting is in place.

	A pole on state right of way owned by others shall not be used to support span wire signals. If an adjustment of the location for a department installed pole cannot be made, the existing pole shall be moved at the expense of the owner.

	~~===902.4.1.4~~ Installation Cost of Signals===

	'''Standard.''' If the need is established by a traffic study and the intersection meets a warrant(s), a method of funding the installation shall be determined.		'''Standard.''' If the need is established by a traffic study and the intersection meets a warrant(s), a method of funding the installation shall be determined.
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	'''Guidance.''' Ideally, a signal to be installed will be placed upon the Right of Way and Construction Program but other methods of funding may be available.		'''Guidance.''' Ideally, a signal to be installed will be placed upon the Right of Way and Construction Program but other methods of funding may be available.

	====902.4.1.4.1 Right of Way and Construction Funding====		====902.4.1.2.1 Right of Way and Construction Funding====

	'''Guidance.''' The installation of permanent signals could be funded by right of way and construction funds.		'''Guidance.''' The installation of permanent signals could be funded by right of way and construction funds.
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	'''Support.''' Contact district Design or Planning for information on status of programmed projects or the possibility of programming signals. In some cases, signals could be installed on a high hazard project that is also part of the right of way and construction program.		'''Support.''' Contact district Design or Planning for information on status of programmed projects or the possibility of programming signals. In some cases, signals could be installed on a high hazard project that is also part of the right of way and construction program.

	====902.4.1.4.2 District Funding====		====902.4.1.2.2 District Funding====

	'''Option.''' It may become necessary to install signals prior to the time they can be provided through the normal Right of Way and Construction Program. Intersections that satisfy the warrants described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C)\|EPG 902.3]], may qualify for the installation of signals with internal funds.		'''Option.''' It may become necessary to install signals prior to the time they can be provided through the normal Right of Way and Construction Program. Intersections that satisfy the warrants described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C)\|EPG 902.3]], may qualify for the installation of signals with internal funds.

	====902.4.1.4.3 Funding by Others====		====902.4.1.2.3 Funding by Others====

	'''Guidance.''' If an industrial plant, factory, or commercial entrance meets a warrant for signal installation, the owner can provide, at no cost to MoDOT, the traffic signal and the intersection geometric improvements.		'''Guidance.''' If an industrial plant, factory, or commercial entrance meets a warrant for signal installation, the owner can provide, at no cost to MoDOT, the traffic signal and the intersection geometric improvements.

Smithk: /* 902.4.2.1 Controller and Cabinet Replacement Program */ Per TS, updated signal cabinet recommended replacement age to 25 years from 20 years

2022-02-16T17:05:54Z

902.4.2.1 Controller and Cabinet Replacement Program: Per TS, updated signal cabinet recommended replacement age to 25 years from 20 years

← Older revision		Revision as of 12:05, 16 February 2022
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	===902.4.2.1 Controller and Cabinet Replacement Program===		===902.4.2.1 Controller and Cabinet Replacement Program===

	'''Guidance.''' Routine replacement of control equipment assists in maintaining and operating a reliable system. Signal controllers should be replaced at 10 years of age or older and cabinets should be replaced at 20 years of age or older.		'''Guidance.''' Routine replacement of control equipment assists in maintaining and operating a reliable system. Signal controllers should be replaced at 10 years of age or older and cabinets should be replaced at 25 years of age or older.

	'''Option.''' Cabinets and controllers may be replaced sooner than the recommended age. Controllers or cabinets experiencing higher than normal maintenance should be considered for replacement regardless of age.		'''Option.''' Cabinets and controllers may be replaced sooner than the recommended age. Controllers or cabinets experiencing higher than normal maintenance should be considered for replacement regardless of age.

	'''Support.''' Controllers replaced under this replacement program do not automatically generate a need to modify ADA-related pedestrian accommodations. However, some controller replacements will lead to a need for such changes. For more information on this subject, see [[642.4 Impact of the Project Category on ADA\|EPG 642.4 Impact of the Project Category on ADA]].		'''Support.''' Controllers replaced under this replacement program do not automatically generate a need to modify ADA-related pedestrian accommodations. However, some controller replacements will lead to a need for such changes. For more information on this subject, see [[642.4 Impact of the Project Category on ADA\|EPG 642.4 Impact of the Project Category on ADA]].

Smithk: /* 902.4.1.1 Conditions for installation by permit */

2021-11-22T19:30:29Z

902.4.1.1 Conditions for installation by permit

← Older revision		Revision as of 14:30, 22 November 2021
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	The applicant shall pay all costs for the permanent signal installation and any required geometric improvements. The Commission will provide electrical power, maintenance of the signal after it is completed and accepted and future replacement if needed, all at no cost to the applicant. Upon completion and acceptance of the installation, the signal and all appurtenances shall become the property of the state.		The applicant shall pay all costs for the permanent signal installation and any required geometric improvements. The Commission will provide electrical power, maintenance of the signal after it is completed and accepted and future replacement if needed, all at no cost to the applicant. Upon completion and acceptance of the installation, the signal and all appurtenances shall become the property of the state.

	An agreement with the Commission for the installation of the traffic signal shall be executed as part of the permit. The standard contract ~~[http://sharepoint/support/CC/CCO%20Contracts/TR_-_Traffic/TR16_Agreement_for_Installation_of_Traffic_Signal_by_Others.docx~~ Agreement for the Installation of a Traffic Signal by Others to be Maintained by the Commission] is available.		An agreement with the Commission for the installation of the traffic signal shall be executed as part of the permit. The standard contract "Agreement for the Installation of a Traffic Signal by Others to be Maintained by the Commission" (TR16) is available.

	===902.4.1.2 Permanent Signals===		===902.4.1.2 Permanent Signals===

Smithk: Per TS, updated New Product Evaluation Form link

2021-09-07T19:24:12Z

Per TS, updated New Product Evaluation Form link

← Older revision		Revision as of 14:24, 7 September 2021
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	[[106.17 New Product Evaluation\|MoDOT frequently tests new products and equipment]] for signals. These new products can be installed on a construction project, purchased on parts orders or with controller orders. Only a limited number of units will be accepted for test statewide until an item is added to the approved products list.		[[106.17 New Product Evaluation\|MoDOT frequently tests new products and equipment]] for signals. These new products can be installed on a construction project, purchased on parts orders or with controller orders. Only a limited number of units will be accepted for test statewide until an item is added to the approved products list.

	'''Standard.''' All equipment evaluations are coordinated through Traffic and are reviewed by the Traffic Signal Quality Circle. The vendor supplying the equipment must fill out the [https://www.modot.org/~~sites/default/files/documents/general_services/newproductevaluationform.pdf~~ New Product Evaluation Form] and provide equipment specifications and a certification that the equipment meets MoDOT specifications before the test is performed. The equipment is tested for the period specified on the approved products list.		'''Standard.''' All equipment evaluations are coordinated through Traffic and are reviewed by the Traffic Signal Quality Circle. The vendor supplying the equipment must fill out the [https://www.modot.org/traffic New Product Evaluation Form] and provide equipment specifications and a certification that the equipment meets MoDOT specifications before the test is performed. The equipment is tested for the period specified on the approved products list.

	'''Option.''' Products that are not performing satisfactorily may be replaced at any time if the vendor cannot provide timely correction of the problem or if unsatisfactory operation of the intersection results.		'''Option.''' Products that are not performing satisfactorily may be replaced at any time if the vendor cannot provide timely correction of the problem or if unsatisfactory operation of the intersection results.

Smithk: Per TS, removed reference to archaic article

2020-08-26T16:27:18Z

Per TS, removed reference to archaic article

← Older revision		Revision as of 11:27, 26 August 2020
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	An agreement with the Commission for the installation of the traffic signal shall be executed as part of the permit. The standard contract [http://sharepoint/support/CC/CCO%20Contracts/TR_-_Traffic/TR16_Agreement_for_Installation_of_Traffic_Signal_by_Others.docx Agreement for the Installation of a Traffic Signal by Others to be Maintained by the Commission] is available.		An agreement with the Commission for the installation of the traffic signal shall be executed as part of the permit. The standard contract [http://sharepoint/support/CC/CCO%20Contracts/TR_-_Traffic/TR16_Agreement_for_Installation_of_Traffic_Signal_by_Others.docx Agreement for the Installation of a Traffic Signal by Others to be Maintained by the Commission] is available.

	~~'''Support.''' Refer to [[902.17 Execution of Contracts for Signal or Flasher Installation\|EPG 902.17]] for additional information on execution of contracts.~~

	===902.4.1.2 Permanent Signals===		===902.4.1.2 Permanent Signals===

Smithk: Per TS, minor clarifications

2020-08-19T16:20:10Z

Per TS, minor clarifications

← Older revision		Revision as of 11:20, 19 August 2020
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	===902.4.1.2 Permanent Signals===		===902.4.1.2 Permanent Signals===

	'''Guidance.''' Permanent signals are installations using steel mast arm poles, underground conduit and basic intersection lighting. Permanent signal installations are preferable to span wire signal installations, but each case is decided on its own merits and the funding available.		'''Guidance.''' Permanent signals are installations using steel mast arm poles, underground conduit and basic intersection lighting. Permanent signal installations are preferable to span wire signal installations, but each case is decided on its own merits and the funding available. If field conditions are such, that span wire installations need to be considered coordination with [http://sp/sites/ts/Pages/default.aspx Central Office Highway Safety and Traffic] should occur.

	The signals, lighting and intersection geometrics are constructed according to current Design standards. Permanent signals are typically installed with construction projects or at locations where there are no programmed major roadway projects that would affect the signals.		The signals, lighting and intersection geometrics are constructed according to current Design standards. Permanent signals are typically installed with construction projects or at locations where there are no programmed major roadway projects that would affect the signals.
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	[[106.17 New Product Evaluation\|MoDOT frequently tests new products and equipment]] for signals. These new products can be installed on a construction project, purchased on parts orders or with controller orders. Only a limited number of units will be accepted for test statewide until an item is added to the approved products list.		[[106.17 New Product Evaluation\|MoDOT frequently tests new products and equipment]] for signals. These new products can be installed on a construction project, purchased on parts orders or with controller orders. Only a limited number of units will be accepted for test statewide until an item is added to the approved products list.

	'''Standard.''' All equipment evaluations are coordinated through Traffic and are reviewed by the Traffic Signal Quality Circle. The vendor supplying the equipment must fill out the [~~http~~://www.modot.~~mo.gov~~/~~business~~/~~contractor_resources~~/documents/~~NewProductEvaluationForm~~.pdf New Product Evaluation Form] and provide equipment specifications and a certification that the equipment meets MoDOT specifications before the test is performed. The equipment is tested for the period specified on the approved products list.		'''Standard.''' All equipment evaluations are coordinated through Traffic and are reviewed by the Traffic Signal Quality Circle. The vendor supplying the equipment must fill out the [https://www.modot.org/sites/default/files/documents/general_services/newproductevaluationform.pdf New Product Evaluation Form] and provide equipment specifications and a certification that the equipment meets MoDOT specifications before the test is performed. The equipment is tested for the period specified on the approved products list.

	'''Option.''' Products that are not performing satisfactorily may be replaced at any time if the vendor cannot provide timely correction of the problem or if unsatisfactory operation of the intersection results.		'''Option.''' Products that are not performing satisfactorily may be replaced at any time if the vendor cannot provide timely correction of the problem or if unsatisfactory operation of the intersection results.

Smithk: Per TS, updated guidance for the installation of audible pedestrian signals at intersections of projects requiring ADA upgrades. This guidance also applies to new construction projects.

2020-05-07T18:21:17Z

Per TS, updated guidance for the installation of audible pedestrian signals at intersections of projects requiring ADA upgrades. This guidance also applies to new construction projects.

← Older revision		Revision as of 13:21, 7 May 2020
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	==902.4.1 New Signal Installations==		==902.4.1 New Signal Installations==

	'''Guidance.''' Normal procedure for installation of traffic control signals, after having been found warranted and justified, is to provide for their installation through normal construction programming. If the need for a traffic signal becomes a matter of urgency, signals can be considered for installation through department forces, contract, or a combination of the two. It is in no way considered as a replacement for the normal construction programmed signal installation. In addition, warranted signals can be installed at developments by permit.		'''Standard.''' New signalized intersections shall accommodate pedestrians with curb ramps, accessible pedestrian signals and detectors (with audible tones or messages, and vibratory surfaces), and pavement markings if sidewalks are present or planned.

			'''Guidance.''' Normal procedure for installation of traffic control signals, after having been found warranted and justified, is to provide for their installation through normal construction programming. New signalized intersections shall accommodate pedestrians with curb ramps, accessible pedestrian signals and detectors, and pavement markings if sidewalks are present or planned. If the need for a traffic signal becomes a matter of urgency, signals can be considered for installation through department forces, contract, or a combination of the two. It is in no way considered as a replacement for the normal construction programmed signal installation. In addition, warranted signals can be installed at developments by permit.

	After it has been identified that signals are needed at an intersection, it will be necessary to identify funding for the installation. The type of installation and the source of funding will depend on many factors. It is usually necessary to develop a priority list of intersections, since funding is not available to signalize every intersection that meets signal warrants. District Traffic will determine the signal control type before design of the preliminary signal layout is started.		After it has been identified that signals are needed at an intersection, it will be necessary to identify funding for the installation. The type of installation and the source of funding will depend on many factors. It is usually necessary to develop a priority list of intersections, since funding is not available to signalize every intersection that meets signal warrants. District Traffic will determine the signal control type before design of the preliminary signal layout is started.

			'''Support.''' See [[620.2 Pavement and Curb Markings (MUTCD Chapter 3B)#620.2.18 Crosswalk Markings (MUTCD Section 3B.18)\|EPG 620.2.18 Crosswalk Markings]] for additional information.

	===902.4.1.1 Conditions for installation by permit===		===902.4.1.1 Conditions for installation by permit===
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	'''Guidance.''' Routine replacement of control equipment assists in maintaining and operating a reliable system. Signal controllers should be replaced at 10 years of age or older and cabinets should be replaced at 20 years of age or older.		'''Guidance.''' Routine replacement of control equipment assists in maintaining and operating a reliable system. Signal controllers should be replaced at 10 years of age or older and cabinets should be replaced at 20 years of age or older.

	'''Option.''' Cabinets and controllers may be replaced sooner than the recommended age. Controllers or cabinets experiencing higher than normal maintenance should be considered for replacement regardless of age.		'''Option.''' Cabinets and controllers may be replaced sooner than the recommended age. Controllers or cabinets experiencing higher than normal maintenance should be considered for replacement regardless of age.

			'''Support.''' Controllers replaced under this replacement program do not automatically generate a need to modify ADA-related pedestrian accommodations. However, some controller replacements will lead to a need for such changes. For more information on this subject, see [[642.4 Impact of the Project Category on ADA\|EPG 642.4 Impact of the Project Category on ADA]].

	===902.4.2.2 [http://www.modot.mo.gov/business/contractor_resources/traffic.htm Approved Products Lists] and Equipment Evaluations===		===902.4.2.2 [http://www.modot.mo.gov/business/contractor_resources/traffic.htm Approved Products Lists] and Equipment Evaluations===
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	:* What criteria will be used to determine if the equipment is satisfactory?		:* What criteria will be used to determine if the equipment is satisfactory?

	The [[media:902.10.2 Product Evaluation Form for Signal and Lighting Equipment.doc\|Product Evaluation Form – Signal and Lighting Equipment]] can be used for evaluation of experimental equipment.		The [[media:902.10.2 Product Evaluation Form for Signal and Lighting Equipment.doc\|Product Evaluation Form – Signal and Lighting Equipment]] can be used for evaluation of experimental equipment.

	==902.4.3 Annual Orders and District Signal and Lighting Equipment Purchases==		==902.4.3 Annual Orders and District Signal and Lighting Equipment Purchases==

EPGsysop: /* 902.4.3 Annual Orders and District Signal and Lighting Equipment Purchases */

2017-06-29T18:52:34Z

902.4.3 Annual Orders and District Signal and Lighting Equipment Purchases

← Older revision		Revision as of 13:52, 29 June 2017
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	==902.4.3 Annual Orders and District Signal and Lighting Equipment Purchases==		==902.4.3 Annual Orders and District Signal and Lighting Equipment Purchases==

	'''Guidance.''' Traffic Division will coordinate annual orders for signal and lighting equipment purchases. The intent of annual orders is to combine orders from all districts to develop larger quantities and to save duplication of work.		'''Guidance.''' Highway Safety and Traffic Division will coordinate annual orders for signal and lighting equipment purchases. The intent of annual orders is to combine orders from all districts to develop larger quantities and to save duplication of work.

	'''Standard.''' Annual orders are limited to items that will be purchased in larger quantities and can be bid competitively. For signal and lighting annual orders, it is important that only these types of items be included in the requests. Proprietary items, model specific replacement parts, and small quantity items are to be purchased at the district level.		'''Standard.''' Annual orders are limited to items that will be purchased in larger quantities and can be bid competitively. For signal and lighting annual orders, it is important that only these types of items be included in the requests. Proprietary items, model specific replacement parts, and small quantity items are to be purchased at the district level.

Smithk: Per TS, updated signal related preventive maintenance & inspection processes. Cycle of controller & cabinet replacement lengthened from 15 years to 20; LED signal indications replacement extended

2017-02-15T16:29:27Z

Per TS, updated signal related preventive maintenance & inspection processes. Cycle of controller & cabinet replacement lengthened from 15 years to 20; LED signal indications replacement extended

← Older revision		Revision as of 11:29, 15 February 2017
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	==902.4.2 Controllers and Equipment==		==902.4.2 Controllers and Equipment==

	===902.4.2.1 Controller Replacement Program===		===902.4.2.1 Controller and Cabinet Replacement Program===

	'''~~Standard~~.''' ~~Districts are responsible for maintaining funds for routine~~ replacement of ~~signal controllers. This program helps to maintain reliable~~ control equipment ~~for traffic signals~~. ~~Controller assemblies 14~~ years or older ~~are to be replaced. In addition, controller assemblies that have higher than normal maintenance problems are eligible to~~ be replaced.		'''Guidance.''' Routine replacement of control equipment assists in maintaining and operating a reliable system. Signal controllers should be replaced at 10 years of age or older and cabinets should be replaced at 20 years of age or older.

	'''~~Guidance~~.''' The districts should develop a list of needs by age based on information in the signal inventory. This list can be developed by running two TMS queries: Traffic Signal Inventory by Age of Controller and Traffic Signal Inventory by Age of Cabinet. The districts will review the reports developed from the two queries and ~~propose any additional~~ controllers ~~or delete locations from~~ the ~~lists that are scheduled for construction contracts~~ or ~~other means of replacement.~~		'''Option.''' Cabinets and controllers may be replaced sooner than the recommended age. Controllers or cabinets experiencing higher than normal maintenance should be considered for replacement regardless of age.

	'''Standard.''' The districts shall prepare a “Traffic Signal Order Form” for controller assemblies and submit electronically to Traffic Division. An [http://sharepoint/systemdelivery/TR/EPG/Signals%20and%20Lighting/New%20EPG%20902%20with%20Ch4%20MUTCD/Order%20Form%20Example.pdf example for ~~filling out controller order forms for NEMAs and 170s] is available. All~~ replacement ~~units are bid at the same time to help reduce overall costs.~~

	~~Upon receipt~~ of replacement equipment, the districts shall inspect the units received for conformance to specifications and purchase order requirements. If problems are found, the district shall notify the vendor as soon as possible.

	'''Guidance.''' The purchase specifications spell out conditions for acceptance and testing. A test period is required prior to acceptance. It is most desirable to set up controllers for testing on a board in the shop, but if controllers are needed immediately, they can be tested in the field. For large orders, as many units as possible should be tested, but it is not required to test every unit.

	===902.4.2.2 [http://www.modot.mo.gov/business/contractor_resources/traffic.htm Approved Products Lists] and Equipment Evaluations===		===902.4.2.2 [http://www.modot.mo.gov/business/contractor_resources/traffic.htm Approved Products Lists] and Equipment Evaluations===