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Snow & Ice Event/Bare Lane Training 2016-2017. Snow and Ice Event & Bare Lane. Event definition Questions and Answers Bare lane definition Reporting events/bare lanes Reporting passes (timesheet). Event.
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Snow & Ice Event/Bare Lane Training 2016-2017
Snow and Ice Event & Bare Lane • Event definition • Questions and Answers • Bare lane definition • Reporting events/bare lanes • Reporting passes (timesheet)
Event • A winter weather occurrence that consumes resources necessary to prevent, minimize or regain the loss of bare lanes.
Winter Weather OccurrenceExamples • Freezing rain/drizzle • Sleet • Snow • Drifting/blowing snow • Frost • Ice/black ice • Refreeze • Or any combination
Resources Consumed • Labor • Equipment • Material
Resources Consumed • Material - Usage of salt brine, sand, salt, and other chemicals will trigger an event. (except road patrol and anti-icing) • Equipment - Usage of plows, wings, underbodys, and sanders will trigger an event. Use of plow trucks alone in checking of road conditions is not considered a resource. • Labor - Is a resource provided that either materials or equipment are used. • Be sure to correctly record time, equipment, and materials by the end of your next shift.
Prevent, Minimize, or Regain • Prevent - Usage of resources before or during the event such as anti-icing, or the application of chemicals to prevent the loss of bare lanes. • Minimize - Usage of resources/chemicals to reduce the effects or impact of bare lanes lost. • Regain - Process/resources needed to regain the loss of bare lanes
Questions & Answers • How can I be sure if it is an event or not? • Ask yourself two questions. • 1. Is it a winter weather occurrence • 2. Were resources consumed as defined in the event definition. • Both questions must be YES to have an event.
Questions & Answers • Road patrol personnel out doing some spot material applying, is this an event? • No, • If additional crews are called in to do some spot material application, this would trigger an event. If road patrol called in additional crews they would switch from activity 2408 to 2406
Questions & Answers • There is 70% chance of freezing rain. The A shift is called in at 3 a.m. They run the routes and find no precipitation, did not use their plows, wings, sanders, underbody’s or any material. Event? • No
Questions & Answers • Can there be an event on one route and not on another? • Yes, • Due to surface temps, location, wind speed & direction or traffic, it is possible for this to happen. Each route can have different event start and end times.
Questions & Answers • A. Can blowing snow or drifting snow be an event? • Yes, if resources are needed, by event definition. • B. When does a wind event end? • When the wind no longer causes significant snow movement. Ask the question, “Would current conditions cause the loss of bare lanes”?
Bare Lane • All driving lanes are 95% free of snow and ice between the outer edges of the wheel paths and have less than 1 inch of accumulation on the center of the roadway.
95% Bare Lane Example • The entire route is 95% free of snow and ice between the outer edges of the wheel paths in each lane. • If entire route is 40 lane miles, 2 miles of this route could have some snow and ice between the outer edges of the wheel paths, provided traffic is driving at normal travel speeds.
95% Bare Lane Example Continued • Can have compaction between the outer edges of wheel paths through small towns as long as travel speed is not impacted and the total of these locations do not exceed 5% of the route. • If at least 95% of the route meets bare lane condition, but travel speed is impacted because of intermittent drifts or ice, this does not meet the bare lane measure.
Bare Lane 95% of driving lanes must be in this condition. Shoulder and ramps are not included. 95% of entire route must be in this condition and travel speeds are not impacted.
Bare Lane Center stripe and fog lines can be covered with ice and snow. 95% of Wheel tracks and everything in between must be free of ice and snow.
EVENT BEGIN END BARE LANE REGAIN TIME LOST BARE LANE REGAIN BARE LANE TIME IN HOURS *RECORD IN 1\2 HOUR INCREMENTS * USE REGULAR TIME - NOT 24 HOUR CLOCK
Event “Six Hour Rule” • If an event stops and restarts after six hours, it is then considered a new event. • If an event stops and restarts in under 6 hrs it is a continuation of the 1stevent.
Event “Six Hour Rule”Example • 11:30 am snow and wind ends. 12:00 pm bare lane regained. 4:30 pm wind starts to blow and bare lanes are lost once again. • Because it is within the six hours the event will continue along with loss of bare lane.
EVENT EVENT BEGIN END Snow ends Bare lane regain Wind starts blowing Bare lane lost REGAIN BARE LANE LOST BARE LANE 10 am 11 am 12 pm 1 pm 3 pm 4 pm 5 pm 2 pm “Six Hour Rule”
Reporting Bare Lane Regain • Must record bare lane regain in 1st event before you can start a second event. • If bare lanes have not been regained before the start of a new event, all non-regained routes must be set to regain at the start of the new event.
Event ReportingWhen Bare Lanes have not been lost. • Events will be recorded even if bare lanes have not been lost, provided that resources have been used as defined in event definition…
Event/Bare Lane Reporting • Use best judgment when recording the start or end of an event and when recording bare lanes lost and regained. • Use weather reports - RWIS - Patrol Dispatch – Road Patrol or your Supervisor to help with this task.
Application Passes • The plowing passes column on the RCA Plowing & Sanding screen has been changed to Application Passes. Enter a “0” in this column.
Minnesota Duluth 1 http://www.dot.state.mn.us/d1.html Bemidji 2 http://www.dot.state.mn.us/d2.html Brainerd 3http://www.dot.state.mn.us/d3.html Detroit Lakes 4http://www.dot.state.mn.us/d4.html Twin Cities – Metro Areahttp://www.dot.state.mn.us/metro.html Willmar 8http://www.dot.state.mn.us/d8.html Rochester 6http://www.dot.state.mn.us/d6.html Mankato 7http://www.dot.state.mn.us/d7.html
