In fact, it appears Hoosiers started curtailing their travel even before Executive Order 20-08 took effect. The Indiana Department of Transportation (INDOT) deploys continuous count traffic counters throughout the state, and 43 of them were set up and able to collect data from the baseline week of March 2-8, 2020 and every day since to compare.
This chart summarizes the results of the decreases in traffic as a percentage from the baseline week for both passenger cars and trucks. The bolded dates and vertical lines in the chart correspond to weekend days.
It is clear from the chart that traffic for both cars and trucks has declined, with car traffic declining slightly more than truck traffic. Also, Hoosiers have been traveling significantly less on weekend days (compared to the baseline weekend days of March 7 and 8) than weekdays (compared to the baseline weekdays of March 2-6). NIRPC staff is continuing to partner with INDOT to monitor the latest traffic count changes due to COVID-19. To see data from every traffic counter in Indiana, see the INDOT Traffic Count Database System.
For information on how certain types of trips have been affected, see the Google COVID-19 Community Mobility Report.