1. Snow & Ice Event/Bare Lane Training

2. Snow and Ice Event & Bare Lane
Event definition
Questions and Answers
Bare lane definition
Reporting events/bare lanes
Reporting passes (timesheet)

3. Event
A winter weather occurrence that consumes resources necessary to prevent, minimize or regain the loss of bare lanes.

4. Winter Weather Occurrence Examples
Freezing rain/drizzle
Sleet
Snow
Drifting/blowing snow
Frost
Ice/black ice
Refreeze
Or any combination

5. Resources Consumed
Labor
Equipment
Material

6. 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.
Note – Class 33 & 35 have changed from hours to miles.

7. 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

8. Questions & Answers 1. Is it a winter weather occurrence
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.

9. 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
Night and dawn patrol examples:
#1. Starts snowing at 1am
Dawn patrol is performing S&I operations from 1am-5am (Plowing and Sanding)
Dawn patrol calls in additional crews at 5am
At 5am dawn patrol switches his time to activity 2406
This would trigger an event
Event start time would be 1am
#2 Lt. Scattered frost on bridge decks
Dawn patrol is out performing S&I operations (sanding bridge decks)
Dawn patrol completed the operations without calling in additional help
This would not trigger an event.

10. 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

11. 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.

12. 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”?

13. 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.

14. 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.

15. 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.

16. 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.

17. 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.

18. BARE LANE REGAIN TIME TIME IN HOURS EVENT
BEGIN
END
BARE LANE REGAIN TIME
LOST BARE
LANE
REGAIN BARE
LANE
The most important numbers here are from the time the event ends how long did it take to regain the segment.
TIME IN HOURS
*RECORD IN 1\2 HOUR INCREMENTS
* USE REGULAR TIME - NOT 24 HOUR CLOCK

19. 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 1st event.

20. 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.

21. “Six Hour Rule” Snow ends Bare lane regain Wind starts blowing
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
2 pm
3 pm
4 pm
5 pm
“Six Hour Rule”

22. 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.
Must record Bare Lane Regain in the 1st event before you can start a second event provided that the time between the 1st and 2nd events is greater then 6 hours.
Bare lanes can and may be lost and regained several times during an event.

23. Event Reporting When 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…

24. 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.

25. Application Passes
The plowing passes column on the RCA Plowing & Sanding screen has been changed to Application Passes.
Enter a “0” in this column.

26. Application Passes “Column”
Application Pass Column

27. Reporting/Cost
Cost Graph – MnDOT is a cost driven – managing salt usage is important environmentally as well as fiscally.

28. Reporting
Application Pass Column

29. Reporting
New OBI Hours to Bare Lane Dashboard

30. Reporting
Statewide Frequency of meeting targets

31. Reporting
Application Pass Column

32. Reporting
Material Stock Pile Dashboard

33. Reporting
Material Stockpile dashboard report data in OBI

34. ArcGIS Mapping will be available this season

35. Minnesota Duluth 1 Bemidji 2
Bemidji 2
Brainerd 3
Detroit Lakes 4
Twin Cities – Metro Area
Willmar 8
Rochester 6
Mankato 7

36. Have a Safe Winter Season