winter operations guidelines michigan department of transportation
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Winter Operations Guidelines Michigan Department of Transportation. Overview . The Case for Adjusting MDOT’s Winter Maintenance Strategy Lessons learned from 2007-2008 Increased costs Budget concerns Statewide consistency Sensible approach. Introduction. Assigning Winter Level of Service

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overview
Overview
  • The Case for Adjusting MDOT’s Winter Maintenance Strategy
    • Lessons learned from 2007-2008
    • Increased costs
    • Budget concerns
    • Statewide consistency
    • Sensible approach
introduction
Introduction
  • Assigning Winter Level of Service
  • Service Level Definitions
    • Priority 1-Orange Routes
    • Priority 2-Blue Routes
  • Winter Operations Guidelines
  • Frequently Asked Questions
assigning winter level of service
Assigning Winter Level of Service
  • State Long Range Transportation Plan (SLRP) 2005-2030 is the basis for assigning LOS
  • Designates routes into International, national, statewide,regional, and local significance
  • MDOT used these designations for assigning winter LOS

The SLRP 2005-2030 is available at michigan.gov/mdot

slrp designation factors
SLRP Designation Factors
  • ADT
  • Commercial ADT
  • Total Population
  • Total Employment
  • Tourism
  • Airports
  • Carpool Lots
  • Intermodal Freight
priority 1 orange route
Priority 1-OrangeRoute
  • Goal is to achieve full width pavement “generally bare of ice and snow”
    • Operations should be continuous during and after the storm until goal is met
    • Use OT during and after storm event until goal is met
orange route statistics
Orange Route Statistics
  • 34% of state highway miles
  • 81% of commercial vehicle miles
  • 70% of passenger vehicle miles
  • 93% of state’s population live within 10 miles
  • 95% of state’s employment base is within 10 miles
priority 2 blue route
Priority 2-Blue Route
  • Goal is to provide pavement “generally bare of ice and snow” for one wheel track in each direction
    • Operations should be continuous during and after the storm until goal is met
    • Use OT during and after storm event until goal is met
    • Clearing the full width should be done after the storm event without using OT
2008 2009 winter operations guidelines
2008-2009 Winter Operations Guidelines
  • Generally Bare of Ice and Snow definition
  • Communication and

Coordination

  • Effort During Storm
  • Exceptions
  • Service Uniformity
generally bare of ice and snow
Generally Bare of Ice and Snow
  • The travel lane surface is free from drifts, snow ridges, and as much ice and snow pack as practical
  • This does not mean bare pavement or dry pavement
  • Motorists should expect some inconvenience and must drive responsibly
communication and coordination
Communication and Coordination
  • Communicate early (preseason) with neighboring agencies
    • Discuss winter operations practices
    • Coordinate shift times if feasible
    • Exchange contact information
  • Communication during storm
    • Coordinate winter operations along a corridor
    • Minimize LOS inconsistencies at jurisdictional boundaries
effort during storm
Effort During Storm
  • Plow and provide surface treatments as required during storm events
  • Remove as much snow mechanically as possible
  • Use only enough deicing agents as necessary
  • Refer to the Salt Application Charts
exceptions to guidelines
Exceptions to Guidelines
  • Some exceptions may be appropriate including:
    • Adjusting service levels due to storm severity and duration
    • Adjusting maintenance activities due to an abnormal influx of traffic (sporting event or festival)
service uniformity
Service Uniformity
  • The goal is to minimize unexpected changes in pavement surface condition
  • Routes should end at logical locations where one would anticipate a change
faq s what happens when we achieve the los and its still snowing
FAQ’s-What happens when we achieve the LOS and its still snowing?
  • Operations should be continuous during the storm
  • If it is still snowing more than likely you will not have met the goal on the entire route
faq s what happens when we achieve the los and it stopped snowing
FAQ’s-What happens when we achieve the LOS and it stopped snowing?
  • Operations should be continuous after the storm until goal is met for both priority levels*
  • During regular work hours continue with cleanup operation until completed or shift ends
  • If on overtime, operations should stop

*Achieving LOS during extended periods of cold temperatures may not be possible even with continuous effort

faq how do you treat shoulders after the los has been met
FAQ-How do you treat shoulders after the LOS has been met
  • Orange Route -Clearing the shoulders (with 2” of snow or more) should be done after the storm event using OT
  • Blue Route -Clearing the shoulders (with 2” of snow or less) should be done after the storm event without using OT
faq s why were the los maps adjusted
FAQ’s-Why Were The LOS Maps Adjusted?
  • To further enhance statewide consistency
  • Address rising costs and stagnant budgets
  • To be consistent with the goals of the State Long Range Transportation Plan
  • Lessons learned from 2007-2008 season
faq s does a blue route mean the route will be impassible
FAQ’s-Does a Blue Route Mean The Route Will Be Impassible?
  • No, a blue route and orange route will be treated with the same effort during a storm event
  • After the storm one wheel track in each direction will be maintained at a minimum and will always be passable
  • The motorist is responsible for driving according to conditions per the Michigan Vehicle Code
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