review of draft 2011 va work area protection manual...19 chapter 6f – ttc zone devices...

REVIEW OF THE DRAFT 2011 VA WORK AREA

PROTECTION MANUAL

December 14, 2010David Rush

VDOT WZS Program Manager

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Manual on Uniform Traffic Control DevicesManual on Uniform Traffic Control Devices(MUTCD)(MUTCD)

• Released in December 2009• States have until January 2012 to

adopt it or develop their own manual– Supplement to the MUTCD– VA WAPM (Part 6)– VA Highway Signs Manual

Goal – adoption by the CTB in May 2011,Implementation in Oct. or Nov. 2011

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2011 VA WAPM Contents2011 VA WAPM ContentsIntroductionChapter 6A – GeneralChapter 6B – Fundamental PrinciplesChapter 6C – TTC ElementsChapter 6D – Pedestrian and Worker

SafetyChapter 6E – Flagger ControlChapter 6F – TTC Zone DevicesChapter 6G – Type of TTCZ ActivitiesChapter 6H – Typical ApplicationsChapter 6I – Traffic Incident

Management AreasAppendix A – Barrier/TCD GuidelinesAppendix B – WZS ChecklistAppendix C – VSP GuidelinesAppendix D – CMS Procedures

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2011 VA WAPM - Introduction2011 VA WAPM - Introduction

Changes/Additions• Applies to all roads open to the public, including private roads.• Format is the same –

– Standards (shall conditions, bold font)– Guidance (should conditions, italicized font)– Option (may conditions, underlined font)– Support (informational statements, standard font)

• Each paragraph is numbered for easier reference.

04 The primary function of TTC is to provide for the reasonably safe and effectivemovement of road users through or around TTC zones while reasonably protectingroad users, workers, responders to traffic incidents, and equipment.

05 Of equal importance to the public traveling through the TTC zone is the safety ofworkers performing the many varied tasks within the work space.

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Chapter 6A - GeneralChapter 6A - General

Changes/Additions• In Definitions of Words and Phrases, added 23 more

definitions, including portable traffic signal, public road,roundabout, short-term detour, long-term detour, trafficspotter, and worker.

• New section called Acronyms and Abbreviations with 32listings.

Section 6A.03 Meanings of Acronyms and Abbreviations in this Manual1. AADT—annual average daily traffic2. AASHTO—American Association of State Highway and Transportation Officials3. ATSSA—American Traffic Safety Services Association4. ADA—Americans with Disabilities Act5. ADT—Average Daily Traffic6. AFAD – Automated Flagger Assistance Device7. ANSI – American National Standards Institute8. CFR – Code of Federal Regulations

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Chapter 6B Chapter 6B –– Fundamental Principles Fundamental Principles

Changes/Additions• Emphases on work zone safety training for installers and

designers.• Emphases on review and documentation of work zone traffic

control.• Requires TTC devices to be removed as soon as practical, and

the removal of advanced warning signs when work is suspendedafter 30 minutes.

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Chapter 6C Chapter 6C –– TTC Elements TTC Elements

Changes/Additions• Spacing of Advanced Warning Signs Table has been modified

for Urban Streets with 30 to 35 mph posted speed limit:

1300' – 1500'Limited Access highways

500' – 800'Roadways with greater than 45 mph posted speed

350' – 500'Roadways with 45 mph or less posted speed

250' – 350'Urban street with 30 to 35 mph posted speed

100' – 200'Urban street with 25 mph or less posted speed

Table 6C-1, Spacing of Advanced Warning Signs

• For urban conditions, it is generally better to place all advancedwarning signs within a one block area versus spreading outover several blocks.

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Changes/Additions• Length of the longitudinal Buffer Space Table has been modified:

740 +70650 +65570 +60500 +55425 +50360 +45310 +40250 +35200 +30160 +25120 +< 20

Distance (ft.)Posted Speed

730-36070645-67565570-59060500-52055425-44550360-38045305-32040250-26035200-21030155-16025115-120< 20

Distance (ft.)Posted Speed

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Changes/Additions• If a shoulder or parking lane is used as a travel lane, a

normal merging (L ) or shifting (⅓ L) taper should beused.

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Chapter 6D Chapter 6D –– Pedestrian and Pedestrian andWorker SafetyWorker Safety

Changes/Additions• Section 6D.01 - Defines knowledgeable persons as

individuals that have received training or certificationin work zone traffic control.

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Section 6D.03 -• Refers to Traffic Engineering

Division TE-345 Memorandumfor Work Zone Traffic ControlTraining Requirements.

• Refers to Appendix AGuidelines for Use ofBarrier/Channelization Devicesfor guidance on the use ofbarriers and channelizationdevices.

Changes/Additions

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Section 6D.03 Worker Safety Considerations• Beginning July 1, 2012, all workers (including emergency

responders) shall wear Performance Class 3 high visibilityapparel meeting ANSI/ISEA 107–2010 publication entitled“American National Standard for High-Visibility Safety Appareland Headwear”.

• Beginning July 1, 2012, all workers installing, maintaining andremoving traffic control devices in night-time work zones shallwear Class 3 apparel with Class E trousers.

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Section 6D.03 Worker Safety Considerations• Defines nighttime work zones as operations which occur from

30 minutes before sunset to 30 minutes after sunrise.• Refers to Appendix C Guidelines for use of Virginia State Police

in Construction and Maintenance Work Zones.

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Chapter 6E Chapter 6E –– Flagger Control Flagger Control

Changes/Additions• Flaggers shall be certified either thought the VDOT program or

the ATSSA Flagger program.• Beginning July 1, 2012, all flaggers shall wear Performance

Class 3 high visibility apparel meeting ANSI/ISEA 107–2010publication entitled “American National Standard for High-Visibility Safety Apparel and Headwear”.

• Flaggers at night shall also wear Class E trousers.

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Changes/Additions• Foot Protection shall comply with either: (1) ASTM F-2412-

2005 (or more current ASTM), "Standard Test Methods forFoot Protection," and ASTM F-2413-2005 (or more currentASTM), "Standard Specification for PerformanceRequirements for Protective Footwear," or the previousstandard (2) ANSI Z41-1999, "American National Standardfor Personal Protection -- Protective Footwear.“

• Head protection shall comply with ANSI Z89.1-1997 (ormore current), "American National Standard for IndustrialHead Protection."

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Changes/Additions• Includes a new section on Automated Flagger Assistance

Devices (AFAD):– Used on two-lane roadway with one lane closed to traffic;– ADT count of 12,000 vehicles per day or less;– Operator has unrestricted view of the AFAD and

approaching traffic in both directions; and– Distance between units is 800 feet or less (consult RTE for

greater distances).

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STOP/SLOWSign Type

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RED/YELLOWLens Type

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Chapter 6F Chapter 6F –– TTC Zone Devices TTC Zone Devices

Changes/Additions• We have added Table 6F-1 Temporary Traffic Control Zone Sign

and Plaque Sizes (over 180 signs and plaques listed).

36 x 4836 x 4848 x 606F.12R4-9Stay InLane

36 x 4836 x 4848 x 606F.84R4-1Do NotPass

36 x 4836 x 4848 x 606F.14R2-1SpeedLimit

36 x 36 x 3636 x 36 x 3648 x 48x 486F.06R1-2Yield

36 x 3636 x 3648 x 486F.06R1-1Stop

Residential &Urban<500 ADT

& < 35 MPH

RestrictedR/W

Full R/WSectionSignDesignation

Sign orPlaque

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Changes/Additions• Includes new information on the use of Business signs

during construction:Guidance:01 Business signs should be used in urban areas where the

original entrance will be relocated for more than 3 months duringconstruction

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Changes/Additions• Some signs will be phased out and replace by other signs.

May be used until Dec. 31,2012

Required after Dec 31, 2012

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Changes/Additions• Some signs will be phased out and replace by other signs.

May be used until Dec. 31,2012

Required after Dec 31, 2012

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Changes/Additions• Expanded the number of Detour signs and typicals on how

to use them.

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Changes/Additions• Will allow the use of chevron arrows on arrow boards

• Requires the placement of conspicuity markings onthe back of trailer devices (PCMS and Arrow Boards)

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Changes/Additions• A minimum of 4 channelizing devices are required in a

taper in advanced of Arrow Boards and PCMS’s

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Changes/Additions• Replacement and correction of

ineffective channelizing devices shallbe accomplished in accordance withthe latest edition of the AmericanTraffic Safety Service Association's(ATSSA) “Quality Standards for WorkZone Traffic Control Devices”publication.

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Changes/Additions• Revised warning light requirements on vehicles

focusing on intensity rather than unit size.• Lights shall be visible under either day and night

conditions a minimum of 1/2 mile on Limited AccessHighways, or a minimum of 1500 feet on all otherroadways.

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Changes/Additions

• Increased the distance the TMA shadow vehicle isplaced from the work operations from 50'-100' to 80'-120'.

• Allows the use of trailer mounted TMA’s.

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Changes/Additions• Safe Entry/Exit of Work Vehicles and Equipment –

– Require warning lights to be activated for work vehiclesentering and exiting a work zone.

– Require WORK VEHICLE, DO NOT FOLLOW signs on theback of construction vehicles entering and exiting projects.

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Chapter 6G Chapter 6G –– Type of TTC Zone Type of TTC ZoneActivitiesActivities

Changes/Additions• The following sections have been added or enhanced

in this chapter:– Detours and Diversions– Multi-lane Mobile Operations– Pull-off Areas in Limited Access Highway and

Expressway Work Zones– Slow Roll Traffic Control Operations– Installing/Removing Temporary Traffic Control– Work Area Ingress/Egress Considerations

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Chapter 6H Chapter 6H –– Typical Applications Typical Applications

Enhanced Typical Traffic Control Figures

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Changes/Additions• Added 21 new TTC layouts including:

– Lane closure on Two-Lane Road Using Traffic ControlSignals

– Flagging Operation at a Signalized Intersection– Flagging Operation at a Single Lane Roundabout– Street Closure Operation with Detour– Multi-lane Mobile Operation– Pull-off Areas in Limited Access Highway and

Expressway Work Zones

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Lane Closure Operation on Two-LaneRoadway Using Traffic Control Signals

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Flagging Operation at a Signalized Intersection

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Flagging Operation at a Single Lane Roundabout

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Street Closure Operation with Detour

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Multi-Lane Mobile Operation

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2011 VA WAPM Contents2011 VA WAPM Contents

http://www.virginiadot.org/business/trafficeng-WZS.aspComments will be received through Jan 31, 2011.

REVIEW OF THE DRAFT 2011 VA WORK AREA

PROTECTION MANUAL

David Rush, VDOT WZS Program ManagerPh 804-371-6672

[email protected]

review of draft 2011 va work area protection manual...19 chapter 6f – ttc zone devices...

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