Developing a Training Video and Manual for Best Practices and Techniques in Clearing Different Interchange Configurations and Other Geometric Layouts


There are many types of interchange configurations and intersection layouts that must be cleared during winter maintenance operations. These include, but are not limited to: diamond, cloverleaf, single-point urban interchange (SPUI), roundabout, Michigan left (boulevard turnaround), continuous flow intersection, diverging diamond, collector distributor lanes/interchange, and auxiliary turn lanes. There are numerous pass sequences that snow and ice professionals can use to clear a given snow route, intersection or interchange configuration. Agencies need a resource that provides guidance on the most efficient and effective means for snow removal utilizing common equipment setups.


This project involved researching and documenting current snow removal practices used by transportation agencies to determine the most efficient practices for clearing various interchange and intersection geometries. The goal was to develop resources that will help agencies better train their operators, justify the purchase of specialized equipment, manage resources, and improve service levels to the driving public.


Researchers developed a 66-minute video (available below and as a video series) that showcases the most efficient pass sequences for plowing 10 different interchange and intersection layouts. A practice manual and reference cards complement the video training.

The final webinar took place on October 18, 2018.

Animations of Interchange and Intersection Clearing Best Practices
(Full Video)


Intersection/Interchange Animations

Introduction to Animations Roundabout Intersection
Four-Leg Intersection Displaced Left-Turn Intersection

Median U-Turn Intersection

Double Roundabout Interchange
Diamond Interchange Cloverleaf Interchange
Single-Point Interchange Diverging Diamond Interchange
Directional T Interchange