Degenerative spine conditions were not significant for increased AIS1 injury risk. The diagnosis disparity was mainly due to coding for pre-existing degenerative diagnosis in ICD-9-CM. The main ICD-9-CM diagnoses were 40.6% cervical, 22.5% lumbar/sacral and 10.2% thoracic and the main AIS1 diagnoses were 29.7% cervical, 23.2% lumbar/sacral and 14.3% thoracic. No striking vehicle occupants reported complaints. A total of 113 struck vehicle occupants were diagnosed within five weeks post-crash with 761 ICD-9-CM complaints and 427 AIS injuries (99.5% AIS1) attributed to the crashes. Mean struck vehicle delta-V and acceleration were 6.3 km/h (s.d. minor rear aligned crashes between passenger vehicles. This study analyzed a new set of 105 U.S. These data are essential as researchers attempt to define ‘whiplash’ injury risk potential in these minor crashes. 65 miles per hour = 95.In the United States there is currently a paucity of available real world minor rear crash data with struck vehicle delta-V, or speed change, less than or equal to 15 kilometers per hour.60 miles per hour = 88.0 feet per second.55 miles per hour = 80.7 feet per second.50 miles per hour = 73.3 feet per second.45 miles per hour = 66.0 feet per second.40 miles per hour = 58.7 feet per second.35 miles per hour = 51.3 feet per second.30 miles per hour = 44.0 feet per second.25 miles per hour = 36.7 feet per second.20 miles per hour = 29.3 feet per second.10 miles per hour = 14.7 feet per second.1 mile per hour = 1.4667 feet per second.This chart is a good cheat sheet for time, speed, distance calculations for how fast a vehicle is going per second. Bright but be prepared for argument that the Maryland Court of Special Appeals opinion in Romero v. Q: So you had maybe four seconds before the impact?Ī: No matter what the answer is to this last question, you have underscored that the defendant’s story is woefully inconsistent which substantially diminishes defendant’s credibility.Ĭertainly, you want to look for opportunities to exclude the argument of plaintiff’s speed because it was not causally related to the accident or because the lay witness testimony is inadequate to support a finding of contributory negligence because of excessive speed. Q: So at 30 mph, a vehicle is traveling less than 15 yards per second? If feet, there are 5,280 feet in a mile?) Q: And there are 1760 yards in a mile? (The witness is using yards here. You would agree that at 30 mph a vehicle is traveling at 2 miles per minute. Q: Then you have to close in and underscore how the defendant is contradicting himself/herself the court has taken judicial notice of how far vehicles can travel over time at given speeds. Q: How long was it until impact after you saw the vehicle? You can’t even offer an estimate?Ī: I don’t know. Q: When you saw the Plaintiff, how far away was he from your vehicle?Ī: I’m not sure. Why? Because the longer a visual estimation takes, the slower the vehicle must have been traveling. This typically works to the victim’s advantage, particularly with respect to speed. The range of responses is laughable and this is what lawyers get from fact witnesses. You can also figure this out by just asking someone to estimate how many feet a vehicle travels in one second while driving 65 mph. In one study, participants who viewed a thirty second event gave an average estimated duration of 150 seconds, 500% longer than it actually took. So you need to be able to calculate how far a vehicle will travel in a second at any given speed.Īs any accident reconstruction textbook will underscore, people usually overestimate the time it took for a car accident to unfold. In a motor vehicle collision where the parties dispute liability, they usually are disputing the time, speed and distance of the vehicles.
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