Impact
A bigger and stronger platform
COSTHA's most recent completed edition was the 2026 Annual Forum & Expo, listed for May 3–8, 2026, in Scottsdale, Arizona. Official COSTHA pages and third-party event listings identify the 2026 forum as a Scottsdale hazardous-materials transportation event. COSTHA also published a 2026 meeting schedule and an attendee and speaker list PDF for the forum.





