highway 125 night work making work zones work better workshop gerard kennedy, p.eng. nova scotia...

Highway 125 Night Work

Making Work Zones Work Better Workshop

Gerard Kennedy, P.Eng. Nova Scotia Department of Transportation & Public Works

Night Work = Safety Concerns

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Risk of Injury/Death

Night Time Day Time

Hwy 125 Night Work

Project Background Specification Development Traffic Management

Province of Nova Scotia

Highway 125

EXIT 6EXIT 7

EXIT 8

EXIT 9

CB RegionalHospital

•100 Series : 2 lane/ 2 way•Total Length :11.2 Km•Cold Planing : 110,000 m2

•Paving : 33,000 t (including PMA)•Guardrail : 3500 m

Highway 125

Hwy 125 - Traffic Volumes

AADT = 21,000 veh/day

ADT (Summer) = 25,000 veh/day

Daytime Hourly = 1000 to 2200 veh/hr

Peak Flow > 2300 veh/hr

Hwy 125 Night Work


Information Gathering

CALIFORNIA NORTH REGION CONSTRUCTION

NIGHT WORK GUIDE

SECTION 1412 PORTABLE CONSTRUCTION LIGHTING

1412-1 DESCRIPTION.

This section describes portable lighting which shall be used for compliance with the Standard Specification Section 105-14 Night Work requirement for artificial lighting.

1412-2 MATERIALS.

All lighting equipment will be furnished as required and retained by the Contractor after the work is completed. Material and/or equipment is not required to be new but shall be in good operating condition and in compliance with applicable safety and design codes.

The Contractor shall submit, for the Engineer's review and approval, a lighting plan showing the type and location of lights he proposes to use for night work. The plan shall be presented on standard size roadway plan sheets (22" x 36") and on a scale of either 100' or 50' to the inch. It shall clearly show the location of all lights necessary for every aspect of work to be done at night. In addition to the plan sheets, the Contractor shall submit catalog cuts giving the specific brand names, model numbers and ratings of the lighting equipment. The submittals shall include power ratings and photometric data. The Contractor shall allow 40 days for the Engineer to review the submittals. Night work shall not begin without the Engineer's approval of a lighting plan and the indicated lighting equipment and/or materials being in operation.

1412-3 TOWER LIGHT.

A tower light shall consist of mercury vapor, metal halide, high pressure sodium or low pressure sodium fixtures mounted on a tower approximately 30' in height. The tower light fixtures shall be heavy duty flood, area, or roadway style with wide beam spread. Fixtures used for a tower light shall have an output of 50,000 lumens minimum, and the combined outputs of all fixtures on each tower light shall not exceed 460,000 lumens. The fixtures shall be weatherproof and supplied with attached waterproof power cord and plug. The tower shall be sturdy and free-standing without the aid of guy wires or bracing. The power supply shall be of sufficient capacity to operate the light(s) and shall be located for the shortest safe routing of cables to the fixtures. A tower light consisting of the combined fixture(s), tower and power supply is preferred.

Tower lights shall be of sufficient wattage and/or quantity to provide an average maintained horizontal illuminance greater than 20 footcandles over the work area.

The lights shall be aimed and positioned to not only illuminate the area for construction work, but to assist the motorist. There shall not be any disabling glare to the motorist. In no case should the main beam of the light be aimed higher than 60 above straight down. The lights should be set as far from traffic as practical and aimed in the direction of, or normal to, the traffic flow.

1412-4 MACHINE LIGHTS.

To:

ENGINEERING INSTRUCTION

New York State Department of Transportation

95-003 Supersedes:

Title: REQUIREMENTS FOR MAINTENANCE AND PROTECTION OF TRAFFIC DURING NIGHTTIME CONSTRUCTION

Distribution: Main Office (30) Local Govt. (31) Regions (32)

Consultants (34) Contractors/AGC (39) _________________ ( )

Approved: / s/ M. J . Cuddy 01/18/95 M. J . Cuddy, Chief Engineer Date

This EI transmits requirements for Maintenance and Protection of Traffic (M&PT) During Nighttime Construction. These requirements are to be followed for all construction activities that are regularly scheduled to occur after sunset and before sunrise. Occasional or unplanned construction activities that carry over past sunset or start before sunrise are not subject to these provisions. Nonetheless, these requirements should be viewed as guidance to ensure safe traffic flow on such occasional nighttime work as well. In addition to the requirements transmitted by this EI, an Addenda has been developed for '619 of the Standard Specifications to add requirements for night construction, and a new specification has been developed to provide lighting requirements for night construction. Those specifications will be issued by EI 95-004 and EI 95-005. The attached requirements are to be addressed in Traffic Control Plans (TCP) for night construction. Whenever possible, the decision to schedule work at night should be made prior to completion of PS&E, and these requirements and procedures are to be included in the design of the TCP. When the decision to schedule construction during night hours is made after the project is let, it will be necessary to revise the TCP to incorporate these requirements and procedures. When night-work is added to ongoing projects, whether initiated by the contractor or by the Department, the Construction Group will be responsible for coordinating revisions to the TCP with Design, including review and comment by the Regional Traffic Group. That coordination and review must be completed, and all equipment and devices required for the revised TCP must be acquired and on the project, prior to the start of night operations. These requirements are to be reflected in TCPs developed for projects beginning with the letting of May 25, 1995. For earlier Letting Dates, these requirements should be addressed to the extent possible. For projects that will involve significant nighttime construction activities in 1995, it is essential that these requirements are addressed in the TCP. If the PS&E is nearly complete, consideration should be given to delaying the letting date or revising the TCP by amendment.

CONTRACT 2002-013 HIGHWAY 125

NIGHT WORK SPECIFICATION

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Night Work Specification

• Work periods• Planning• Training• Signing• Channelization Devices• Traffic Control Persons• Workers• Work Vehicles• Lighting• Site Maintenance

Hwy 125 - Hourly Traffic Volume - Aug/02

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/Hr

Mon Tue Wed Thu Fri Sat Sun

Hwy 125 - 750 Veh/Hr Restriction

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Veh

/Hr


5:30 AM 9:00 PM

750

No Lane Closures8.5 Hrs Work

Hwy 125 - 1000 Veh/Hr Restriction

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6:00 AM 7:00 PM

No Lane Closures11 Hrs Work

Nighttime Work Plan

Traffic control Emergency vehicles Temporary markings Lighting design PPE requirements Training plans Noise reduction

Lighting Design

Tower Layout

Lighting Design

Lamp Aiming

Lighting Design

TCP Lighting

Night Work Training

Night work hazards Vision Visibility Reflective Materials PPE & site Req’mts

Night Work Training – Site

12 MMax

“Standard” Vest

High-Visibility Vest

“Yellow” Trim“Silver” Trim

Lighting Levels

• Level 1 : General Site Lighting – min 59 lux (Safety)

• Level 2 : Behind the Paver – min 108 lux (Workmanship)

• Level 3 : T C Person – min 215 lux (High Visibility/Detailed Work)

Illumination Levels – 2 Lanes

Illumination Levels – Spreader

ATSSA“Guidelines for Work Zone Traffic Control Devices”

Site Inspection

Hwy 125 Night Work


Traffic Management

• Restricted Work Periods

• Emergency Vehicle Passage

• Variable Message Signs

• Media Announcements

• Toll Free Information Line

Emergency Vehicle Passage

Emergency Services Meeting Dedicated Site Contact Traffic Control & Site Communications

Traffic Management






Typical VMS Messages

Traffic Management






Regular Newspaper Updates

Traffic Management






0200000400000600000800000

10000001200000140000016000001800000

Vehicles

Hwy 125 - Trips During Construction

Traffic Management - Success

Trips during construction > 1.5 million

Delay & work zone related complaints = 0

? Questions ?

Contact Information

Gerard Kennedy, P.Eng.

Project Engineer

Nova Scotia Dept. of Transportation & Public Works

P.O. Box 1180

Sydney, N.S.

Canada

B1P 6J9

[email protected]

Tel (902) 563-2518

Fax (902) 563-2517

mailto:[email protected]

highway 125 night work making work zones work better workshop gerard kennedy, p.eng. nova scotia...

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