Indiana Mobility Reports
Recommended Citation
Sakhare, R. S., Desai, J., Horton, D., & Bullock, D. M. (2025). Crawfordsville District interstate speed profiles: April 2020–March 2025. West Lafayette, IN: Purdue University. https://doi.org/10.5703/1288284317852
DOI
10.5703/1288284317852
Abstract
This report presents a graphical summary of monthly mile-hours of congestion across the three interstates (I-65, I-70, and I-74) in INDOT’s Crawfordville District analyzed longitudinally over the last five years from April 2020 to March 2025. It is a continuation of speed profile summaries that are published in previous years. Such systemwide interstate performance measures provide important information for decision makers to plan capital projects and assess operations.
Hours of operation by speed bins (0 to 14 mph, 15 mph to 24 mph, 25 mph to 34 mph, 35 mph to 44 mph, 45 mph to 54 mph, 55 mph to 64 mph, more than 65 mph) for every 0.1 mile of the interstate by direction across a month were tabulated for every hour of every day during the month. The quantities of those six different speed bins are plotted as a stacked bar plot from lower to higher speeds by mile marker for each month. The vertical axis shows the mile marker of the interstate. Horizontally, these stacked bars are cropped at maximum of 250 hours (a little more than 10 days) per month to focus on the lower speeds.
To produce these plots, more than 60 billion records from INRIX across 5 years were analyzed. These speed profiles help identify areas with congestion at system level as well as regions impacted by severe winter storms and construction projects.
Keywords
interstate system, traffic congestion, big data, connected vehicle data, system level analysis, traffic hotspots, work zones, winter storm
Date of this Version
2025
Version
Full Version