The first WREX was held in Texas in 2000. With 523 attendees, it was the largest gathering of crash reconstruction specialists in history to that point. There were numerous presentations and break-out sessions, live crash tests with a high-speed head-on crash, skid-testing by Randy Dodd, the crashing of 17 Kawasaki KZ1000's into concrete blocks and cars, uncertainty testing, a drag-sled study, and David Stopper dragging cars and trucks upright and inverted at speed, among other things. All the presentations from this event are available on the NAPARS website.

16 years later, WREX 2016 was held in Orlando, Florida, which topped the first in attendance and activities. WREX 2016 hosted 863 attendees from 22 countries, making it a truly international event. Everything but the crash testing day was held at the Rosen Shingle Creek conference hotel. The crash tests were bigger, with a head-on tractor-trailer to tractor-trailer collision, a truck tractor crushing a car into a stopped semi-trailer, high speed offset head-on and T-bone crashes, motorcycle crash tests from two groups with many bikes including eight big twin late model Harley Davidsons. An Interactive Field Testing day was held and allowed experts and vendors to host hands on demonstrations and experiments in the hotel parking lot – including laying a truck tractor on its side to easily discuss braking and other components. Attendees were able to choose to attend presentations from 28 of the top recon experts from around the world and additional evening training sessions and a poster presentation session, were offered.

The upcoming WREX 2023 event will be the third and has surpassed 1000 attendees from 24 countries.