Maintenance of traffic mot concepts
Download
1 / 73

Maintenance of Traffic (MOT) Concepts - PowerPoint PPT Presentation


  • 70 Views
  • Uploaded on

Maintenance of Traffic (MOT) Concepts. MOT Training for Incident Responders in Florida. Highway Terminology. Highway Terminology. Standardized names and terms to identify specific features of any street, road, or highway where an incident may occur. Reduce confusion

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Maintenance of Traffic (MOT) Concepts' - abra-weaver


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Maintenance of traffic mot concepts

Maintenance of Traffic (MOT) Concepts

MOT Training for Incident Responders in Florida

Module 4



Highway terminology1
Highway Terminology

Standardized names and terms to identify specific features of any street, road, or highway where an incident may occur.

  • Reduce confusion

  • Improve the safety of responders

  • Make operations at the scene more efficient

Module 4


Shoulders
Shoulders

  • The pavement adjacent to travel lanes

  • Referenced by:

    • Inside or Outside

Module 4


Median
Median

  • The center of the roadway

Module 4


Lane referencing
Lane Referencing

  • Numbered from outside to inside

    • Should not be referenced as the “slow lane” or the “fast lane”

  • Acceleration and deceleration lanes at interchanges will not be numbered except in the case of lane drops or adds

Module 4


Shoulder

Shoulder

Outside

2

Inside

1

3

3

2

1

Median

2

Outside

1

Inside

3

2

3

1

Shoulder

Shoulder

6-lane divided highway

Module 4


Shoulder

Shoulder

Shoulder

Shoulder

3

2

1

3

2

1

3

2

4

1

3

2

1

Inside

Inside

Outside

Outside

Lane Drop

Deceleration Lane

Module 4


Upstream and downstream
Upstream and Downstream

  • Upstream

    • Any area of a highway or any moving traffic that is approaching the actual incident or activity area

  • Downstream

    • Area that is past the incident scene

Module 4


Downstream

Incident

Upstream

Module 4



Differences in definition
Differences in Definition

  • Transportation provider definition

    vs.

  • Emergency responder definition

Module 4

Source: FHWA, Incident Management Performance Measures


Transportation providers
Transportation Providers

  • Traffic Incident Management Handbook defines an “incident” as “any non-recurring event that causes a reduction of roadway capacity or an abnormal increase in demand”

  • The 2000 Highway Capacity Manual defines an “incident” as “any occurrence on a roadway that impedes normal traffic flow”

Module 4


Emergency responders
Emergency Responders

  • Most law enforcement agencies and emergency responders seem to define an “incident” as any event to which they are dispatched or requires a “response” or action by them.

Module 4



Predictable
Predictable

  • Maintenance Activities

  • Construction Activities

  • Special Events

Module 4


Unpredictable
Unpredictable

  • Accidents (crashes)

  • Stalled vehicles

  • Spilled loads

  • Weather

  • Roadway failures

  • Debris falling from trucks

Module 4


Incidents
Incidents

  • Create non-recurring traffic congestion

    • 60% of all congestion

  • Cause secondary crashes

Module 4


Highway standards
Highway Standards

  • Federal Highway Administration (FHWA)

  • State Departments of Transportation

  • Local Municipal Governments

Module 4


Mutcd
MUTCD

  • Chapter 6I of the 2003 MUTCD

  • “Control of Traffic Through Traffic Incident Management Areas”

Module 4


Major provisions
Major Provisions

  • Classify incidents by expected duration

  • Recommend interagency pre-planning and management (“unified incident management”)

  • “Fluorescent coral” background/black letters permitted for signs in incident traffic control zones

  • Recommendations on use of Emergency Vehicle Lighting

Module 4


Incident classification
Incident Classification

  • Level 1 – Minor

    • under 30 minutes

  • Level 2 – Intermediate

    • from 30 minutes to 2 hours

  • Level 3 – Major

    • over 2 hours

Module 4

Source: TIM Handbook & MUTCD 2003 Chapter 6



Temporary traffic control zones1
Temporary Traffic Control Zones

Divided into four areas:

  • Advance Warning Area

  • Transition Area

  • Activity Area

  • Termination Area

Module 4


Component parts of a temporary traffic control zone
Component Parts of a Temporary Traffic Control Zone

Module 4

Source: MUTCD 2003 Chapter 6


Advance warning area
Advance Warning Area

  • First section that informs drivers about the incident area they are approaching

  • Varies from a single sign or warning light on a vehicle to a series of warning signs

    • Examples: cones, flares, or emergency vehicles far in advance of the actual incident (crash or fire scene)

Module 4


Transition area
Transition Area

  • Section of highway where road users are redirected out of their normal path

    • Usually involve strategic use of tapers.

Module 4


Taper
Taper

  • When emergency responders use signs, cones, flares, or blocking vehicles to direct approaching traffic from the normal traffic lanes into a fewer number of open lanes

  • Executed within the Transition Area of an incident scene

Module 4


Taper1
Taper

Module 4

Picture: Safe Parking…While Operating In or Near Moving Traffic, Texas FD


Activity area
Activity Area

  • Section of the highway where the work activity takes place

  • Comprises the Work Area, the Traffic Space and the Buffer Space

Module 4


Work area
Work Area

  • Section of highway closed to road users and set aside for responders (workers), equipment, and material

  • Usually delineated for road users by channelizing devices

Module 4


Work area1
Work Area

Module 4

Picture: Danger on I-95 – South Florida Sun-Sentinel.com


Traffic space
Traffic Space

  • Section of highway in which road users are routed through the activity area

Module 4


Buffer space
Buffer Space

  • The area that separates road user flow from the work space or an unsafe area

  • Provides some recovery space for an errant vehicle

Module 4


Incident responders
Incident Responders

Responders arriving at a traffic incident within 15 minutes of arrival on-scene should:

  • Estimate the magnitude of the traffic incident

  • Predict time duration of the traffic incident

  • Estimate vehicle queue length

  • Set up the appropriate Temporary Traffic Control for these estimates

Module 4



Stopping sight distance
Stopping Sight Distance

  • The distance traveled from the time a driver first detects the need to stop until the vehicle actually stops

Module 4


Perception reaction distance
Perception/Reaction Distance

  • Distance traveled by a vehicle from the instant the driver sees an object to the instant the brakes are applied

Module 4


What is the typical driver s perception reaction time value
What is the typical driver’s perception/reaction time value?

  • 0.5 seconds

  • 1.0 seconds

  • 1.5 seconds

  • 2.5 seconds

  • 4.0 seconds

  • Be prepared for drivers who do not react . . .

Module 4


Braking distance
Braking Distance value?

  • Distance traveled by a vehicle from the instant the brakes lock up until the vehicle stops

Module 4

Source: AASHTO Green Book 2001


Total stopping sight distance based on 2 5 sec perception reaction time
Total Stopping Sight Distance value?(based on 2.5-sec Perception/Reaction Time)

60 Mph

65 Mph

70 Mph

Note:Commercial vehicles require much longer distances.

Module 4


Highway safety personal protective equipment ppe and signaling equipment

Highway Safety Personal value?Protective Equipment (PPE) and Signaling Equipment

Module 4


Personal protective equipment ppe
Personal Protective Equipment “PPE” value?

  • Section 6E.02 of the MUTCD

    • Requires that workers shall wear bright, highly visible clothing when working in or near moving traffic

    • Fire/rescue personnel, EMS crews, law enforcement officials, and even tow truck operators

  • PPE – General requirements Standard 29 CFR 1910.132 (OSHA)

Module 4


Ansi isea public safety vest requirements

Background Material Minimum 450 in value?2

Retroreflective/Combined-Performance Material

Minimum Width 1.97 in Minimum Area 201 in2

The Vest shall have contiguous areas of retroreflective or combined-performance material encircling the torso – placed in a manner to provide 3600 visibility

ANSI/ISEA Public Safety Vest Requirements

Vest

Class II

Module 4

ANSI 207-2006 Standard

Source: Emergency Responder Safety Institute


Highway safety vests
Highway Safety Vests value?

Vest

Class III

  • All incident respondersshall comply with this provision no later than November 24, 2008.

Module 4

Source: Federal Register / Vol. 71, No. 226 / Rules and Regulations Part 634 – Worker Visibility Sec. 634.4


Question
Question? value?

  • At night – how far away can a driver see you?

Module 4

Source: ANSI/ISEA 107-1999 MADE EASY. A Quick Reference to High-Visibility Safety Apparel


Traffic control devices

Traffic Control Devices value?

Module 4


Traffic control devices1
Traffic Control Devices value?

  • To promote highway safety by providing for the orderly and predictable movement of all traffic and to provide guidance and warning as needed

  • Examples:

    • Signs

    • Channelizing devices

    • Lighting devices

    • Shadow vehicles

Module 4


Warning signs
Warning Signs value?

  • Warning signs are used to give notice of an unexpected condition or a condition that may be potentially hazardous to traffic.

Module 4

Picture: KTC, Emergency Traffic Control for Responders-Training


Examples of tim area signs
Examples of TIM Area Signs value?

Source: MUTCD 2003 Chapter 6 Figure 6I-1

Module 4


Warning signs placement
Warning Signs - Placement value?

  • Right- or left-hand side of roadway

  • As near to the edge of the road as possible, but no closer than 2 feet

  • Right angles, facing traffic

  • No obstructions

  • In advance of hills and curves

Module 4


Incorrect placement
Incorrect Placement value?

Module 4

Source: Emergency Traffic Accommodation – A Guide for First Responders


Correct placement
Correct Placement value?

Module 4

Source: Emergency Traffic Accommodation – A Guide for First Responders


Module 4 value?

Source: Emergency Traffic Accommodation – A Guide for First Responders


Channelizing devices
Channelizing Devices value?

  • Their function is to warn road users of conditions created by work activities in or near the roadway and to guide road users

  • Channelizing devices include:

    • cones

    • tubular markers

    • vertical panels

    • drums

    • barricades

    • temporary raised islands

Module 4


Traffic control devices2
Traffic Control Devices value?

  • Florida Design Standard, Series 600 requirements:

    • FDOT approved number shall be engraved on the device

    • Traffic control devices must be on the Qualified Product List

Module 4


Cones
Cones value?

  • Cones shall be predominantly orange

  • Shall be made of a material that can be struck without causing damage to the impacting vehicle

Module 4


Cones1
Cones value?

  • One solution to carrying 28-inch traffic cones within the limited storage space on most responders vehicles is the “collapsible” cones.

  • Four 28-inch tall Pop-UpR cones only occupy a 12-inch-high stack when stored.

Module 4

Picture: Safe Parking…While Operating In or Near Moving Traffic, Texas FD


Flares
Flares value?

  • Work well at night to warn motorists of lane changes and merges due to the bright red light they emit as they burn

  • The visibility of traffic cones can be increased under night conditions by deploying flares and cones together

Module 4


Flares1
Flares value?

When flares are placed near a traffic cone, the light given off by the flare not only warns upstream traffic but illuminates the cone as well

Module 4


Flashlights
Flashlights value?

Specially-designed orange cones that fit over the end of a flashlight to improve their usefulness for traffic control.

Module 4


Emergency vehicle light
Emergency-Vehicle Light value?

  • Essential in the initial stages of a traffic incident

  • Provide safety to emergency responders and persons involved in the traffic incident, as well as road users approaching the traffic incident

  • Example:

    • high-intensity rotating, flashing, oscillating or strobe lights

Module 4


Emergency vehicle light1
Emergency-Vehicle Light value?

  • In multi-lane freeways

    • Recommended to “shed” or turn off all forward-facing emergency lighting that affect traffic in the oncoming lanes

    • To reduce rubbernecking and prevents secondary crashes

Module 4


Minimize lights
Minimize Lights value?

  • Avoid glare to motorists

  • Turn off unnecessary lights

    • Emergency vehicle lighting:

      • Provides warning only and provides no effective traffic control

      • Can be confusing and distracting to drivers

  • Use amber instead of red

Module 4


INCORRECT value?

CORRECT

Module 4

Picture: USFA, Traffic Incident Management System


Arrow panels
Arrow Panels value?

  • Provide additional warning and directional information to assist in merging and controlling road users through or around a Temporary Traffic Control zone

Module 4


Arrow panels1
Arrow Panels value?

  • Nighttime use

    • When advance warning arrow panels are used, the intensity of the flasher shall be reduced

  • Location

    • For lane closures on multi-lane roadways, an arrow panel should be located on the shoulder at the beginning of the taper

Module 4


Module 4 value?

Pictures: FDOT Road Rangers Basic Training


Module 4 value?

Source: MUTCD 2003 Chapter 6 Figure 6I-1


Shadow vehicles
Shadow Vehicles value?

  • Shadow Vehicles – Trucks or trailers that are used to protect workers or work equipment from errant vehicles

  • Heavy Vehicle – 33,000 GVWR or greater, loaded at least 20,000 pounds (tanker truck)

Module 4


Shadow vehicle
Shadow Vehicle value?

  • Once parked, it becomes a traffic control device (TCD) placed as an element of the TCZ using the MUTCD as a guide. It is:

    • spotted parallel with traffic 100 to 250 ft upstream from the work area depending upon the speed limit, with wheels cut toward the shoulder

    • not involved in incident mitigation efforts and not occupied by people!!!

Module 4


Module 4 value?


END value?

Question or Comments

Module 4


ad