What does the latest North American chemical rail traffic data show in terms of weekly volume and year-over-year change?

According to the Association of American Railroads (AAR), chemical railcar volume in North America for the week ended May 16 totaled 49,088 carloads — down 2.1% from the previous week and up 0.5% year over year.

How has the four-week moving average (4wma) of North American chemical railcar volume changed sequentially and year over year, and how does it compare to the seasonal trendline?

The four-week moving average (4wma) of North American chemical railcar volume was 49,969 carloads — down 0.3% sequentially, up 2.3% year over year, and up 7.4% from the seasonal trendline (based on the 2016–25 average).

North America Weekly Chemical Rail Shows Signs of Softening

May 21, 2026

North American chemical rail traffic softened slightly in the week ended May 16, with volumes down 2.1% sequentially according to Association of American Railroads data. Year-over-year gains remain positive despite declining momentum across the region.

chemweek

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Vital stats: Friday, May 1, 2026

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Vital Stats: Friday, May 8, 2026

2026-05-15

North America Weekly Chemical Rail Stabilizes Below March Peak

2026-05-21

North America Weekly Chemical Rail Shows Signs of Softening

2026-05-23

North American Chemical Rail Traffic Softens Slightly