https://peertube.dngr.us/videos/watch/cd7ea89b-dd1c-4b02-a899-94e1a03ba60a Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Join us on Patreon. Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com Dating to 1968, "Whiplash" is a driver's education film produced by Charles Cahill that explores the dangers of rear-end car collisions, focusing on whiplash injuries. Using expert insights from Dr. C.O. Bechtel of UCLA and crash tests with dummies, the film highlights how seatback height and rigidity are critical in protecting the neck during impact. Standard 22-inch seatbacks offer little support, while 28-inch seatbacks or properly designed head restraints significantly reduce injury risk. It also stresses the importance of seat strength, as unbraced seats can collapse in high-speed crashes, worsening injuries. Rear-end crashes often result from inattention, poor brakes, or unsafe following distances. Viewers are reminded to stay alert, maintain their vehicles, and use all available safety features to avoid accidents. This film was based on research by Derwyn Severy, Harrison Brink and Jack Baird at UCLA. 00:00 Skeleton at the wheel. Every car has a framework, just like the human body. However, while a car is replaceable, your body is not. 1:26: Rear-end collisions are one of the most common types of traffic accident. Even at low speeds, these accidents can cause significant injuries, especially whiplash. Dr. C.O. Bechtel chief of orthepedic surgery at UCLA's medical center explains that in a rear-end collision, your body is shoved forward while your head lags behind, creating stress on the spinal vertebrae. The height and rigidity of the seatback determine how much strain is placed on your neck. 2:29: Seatback height: A standard 22-inch seatback spreads impact forces across all seven cervical vertebrae. A 25-inch seat back actually focuses more strain on fewer vertebrae, making it potentially more dangerous. A 28-inch rigid seatback protects the neck by preventing excessive movement, reducing the risk of whiplash. 3:07: Whiplash can lead to muscle and ligament damage, long-term discomfort, or even permanent disability. Seat belts don’t protect the neck. Use of crash tests with anthropometric dummies to study how seatback height and strength could minimize whiplash injuries. 4:13:Even a 10 mph rear-end collision created enough force to simulate lifting your own body weight with another person on your back. Dummies in front seats with 28-inch seatbacks or headrests experienced little to no whiplash, while rear passengers without proper head support hit the sloped rear glass, increasing injury risk. 5:14:4 million rear end collisions occur annually in the U.S. In many cases, poorly maintained brakes or distracted driving are to blame. 6:44: at 30 mph, crash test forces resemble those faced by Navy pilots during a catapult launch. In one test, a driver with a 22-inch seatback was severely whiplashed and thrown so far back that his eyes faced out the rear window. In contrast, a 28-inch modified seatback significantly reduced injury risk, although unprotected rear passengers still suffered from impact with the window. 8:00: 55 mph crash tests, where forces double those felt during an astronaut's liftoff. In one test, the struck car was pushed 94 feet, its trunk crushed, and simulated fuel spilled onto the pavement. While both front seats were 28 inches high, their lack of reinforcement led to structural collapse. Seat strength is as crucial as height in preventing serious injury. 10:28:A seat should not deflect more than 10 degrees, even under high-speed impact. Well-braced 28-inch seatbacks effectively prevented this. Padding or shelves in the rear can help reduce head rotation and injuries.12:05:Driver awareness remains vital. Watching the road ahead and behind, signaling with brake lights when slowing down, and maintaining safe distances are all simple ways to prevent collisions. 14:00: Dramatic final crash test using real gasoline to highlight the deadly potential of rear-end collisions. Conclusion: Driving requires full attention and responsibility—it’s a full-time job that demands serious care. Motion picture films don't last forever; many have already been lost or destroyed. For almost two decades, we've worked to collect, scan and preserve the world as it was captured on 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com Source: https://www.youtube.com/watch?v=A0KLHNwzRx4 Mirrored from Periscope Film (https://www.youtube.com/@PeriscopeFilm) Wed, 24 Jun 2026 19:16:48 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/41a6fee9-7f57-42d0-a5fc-5db4f1af2e31.png https://peertube.dngr.us/videos/watch/cd7ea89b-dd1c-4b02-a899-94e1a03ba60a All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.