Variables Coefficient P-value
COVID-19 cases National Daily confirmed cases -0.008 0.000
National Daily confirmed cases (7 days lagged) 0.004 0.010
Rail freight commodities Chemicals 1996.3 0.000
Farm products 1795.2 0.020
Forest products 1129.6 0.001
Grain 541.5 0.005
Minerals -915.48 0.011
Total intermodal units -3903.3 0.000
Forest products (7 days lagged) -764.76 0.029
Other products (7 days lagged) -669.44 0.003
Minerals (7 days lagged) -2726.6 0.000