Hit-and-run vehicle offenses and forensics
Hit-and-run vehicle offenses occur when drivers cause damage to people or property and flee the scene, regardless of the severity of the incident. These offenses can range from minor mishaps to serious accidents involving injuries or fatalities, making them significant legal concerns. Law enforcement faces the challenge of investigating these offenses, needing to ascertain the identity of the vehicle and driver involved. Investigators employ various forensic techniques at the crime scene, such as securing the area, collecting evidence, and interviewing witnesses. Key evidence includes physical marks like skid patterns and paint samples, which can help identify the responsible vehicle and determine if the incident was accidental or intentional.
Complications can arise regarding the identity of the driver, especially if the vehicle owner claims it was stolen or borrowed. Investigators must gather corroborating evidence, including witness accounts and alibis, to resolve these complexities. Additionally, emerging technology, such as driving insurance applications, provides valuable data on driving behaviors, potentially informing investigations. Overall, hit-and-run offenses are serious violations with intricate forensic considerations that require thorough investigation to uncover the truth behind each incident.
Subject Terms
Hit-and-run vehicle offenses and forensics
DEFINITION: Situations in which the operators of motor vehicles cause damage to other people or property with their vehicles and flee the scenes.
SIGNIFICANCE: Hit-and-run vehicle offenses encompass a wide variety of situations, from incidents in which only minor damage occurs to cases involving serious injuries or deaths. What all hit-and-run offenses have in common is that the operators of the vehicles that caused the damage flee the scene. Law-enforcement investigators must thus determine not only what happened at these scenes but also the identities of the vehicles and their operators responsible for the damage.
Hit-and-run vehicle offenses are extremely serious. Leaving the scene of an accident is punishable by law, even if the accident is only minor. Fleeing the scene of an accident that involves injury to another party is an even more serious offense. In many US states, it is a felony for any driver involved in a motor vehicle accident in which injuries occurred to leave the scene before law-enforcement authorities arrive. Investigations of hit-and-run offenses are often complicated by the fact that police need to determine not only which vehicle caused the damage but also which individual was driving the vehicle at that time. Investigators also need to determine whether a hit-and-run incident was in fact an accident or if the responsible driver had malicious intent.
The Crime Scene
When investigators are called to the scene of a hit-and-run incident, the first thing they must do is secure the area. Much of the that can be gathered from the scene of a vehicle accident is fragile and can be easily disturbed. Investigators use a variety of different methods to record the evidence the scene provides. The placement of vehicles and injured individuals may be marked with chalk, outlined, sketched, or photographed. Distances are measured so that forensic scientists can make determinations regarding the speeds and traveling directions of the vehicles involved. Witnesses are sought out and interviewed.
The purposes of investigating the scene of a hit-and-run incident are to determine what occurred during the incident, to collect information about any factors that were likely involved in causing it (such as possible driver distractions or bad road conditions), and to gather clues to the identities of the responsible vehicle and its driver. Evidence at the scene, such as skid marks and tire tread marks, can help investigators determine whether the driver of the responsible vehicle braked before impact and tried to take evasive action, maintained speed, or even sped up. This kind of information can be important, as it may indicate whether the damage was caused on purpose.
Identifying the Vehicle and Driver
The major challenge in the investigation of a hit-and-run incident is identifying the vehicle involved and its driver. Investigators at the scene not only collect evidence present at the scene but also alert other members of law enforcement in the area to look out for any vehicles with damage that could have been caused by the incident. Investigators may also call automotive body shops and insurance companies to find out if repairs have been done or claims have been filed on any vehicles matching the description of the one believed to be involved. After a significant collision, investigators may even call area hospitals and clinics to see if anyone has received treatment for injuries similar to those believed to have been caused by the accident.
Investigators use the information collected at the scene to determine the make and model of the vehicle involved and to identify the driver. They question witnesses to try to gain information about the sex, hair color, age, and other attributes of the driver and any passengers, as well as information about the vehicle. Physical evidence gathered at the scene—such as paint chipped or scraped off the vehicle, leaked fluids, tire markings, and broken glass from headlights, turn signals, or windows—is also examined in the effort to identify the vehicle involved. Even very small amounts of paint left on an object after a collision can help investigators determine the color of the vehicle involved, and by comparing the chemical properties of the paint against extensive databases of information on the paints used by different vehicle manufacturers, forensic scientists can help narrow the search further.
After investigators have found the particular vehicle involved in a hit-and-run incident, they must determine who was driving the vehicle and whether that person caused the injury or property damage accidentally or deliberately. Although in many cases the identity of the driver may be straightforward—such as when no one but the owner of the vehicle ever drives it—in other cases this issue can become complicated. The owner of the vehicle may claim that it had been stolen, for example, or that it had been borrowed by a friend or relative. In such cases, investigators must use the evidence gathered from eyewitnesses combined with other traditional investigative techniques, such as checking alibis, to determine the identity of the driver.
After both the vehicle and the driver have been identified, the question of intent remains. If the crime scene reveals evidence, such as skid marks, indicating hard braking and evasive action, the event may be ruled an accident. When no such evidence exists, however, the matter of the driver’s intent may be much less clear. The driver may claim that he or she was distracted and did not notice the person or property that was damaged in time to take evasive action. In such a case, investigators must research any possible motives the driver may have had to harm the victim, connections between the victim and the driver, and other information to arrive at the truth.
Another potential source of evidence that modern investigators can use to learn more about the details of a hit-and-run is the data found within driving insurance applications (DIAs). DIAs are mobile phone applications offered by an increasing number of insurance companies. These apps monitor and record data on driving behaviors and patterns. By accessing this data, investigators can gain valuable insight into the details surrounding a hit-and-run incident, such as the rate of speed at which the driver was traveling and more.
Bibliography
Burke, Michael P. Forensic Medical Investigation of Motor Vehicle Incidents. Boca Raton, Fla.: CRC Press, 2007.
"Deciphering Justice: Key Factors - What Evidence Is Needed to Convict a Hit and Run?" Labovick Law Group, 5 Feb. 2024, www.labovick.com/blog/what-evidence-is-needed-to-convict-a-hit-and-run. Accessed 15 Aug. 2024.
Fish, Jacqueline T., Larry S. Miller, and Michael C. Braswell. Crime Scene Investigation: An Introduction. Newark, N.J.: LexisNexis/Anderson, 2007.
Robins, Patrick J. Eyewitness Reliability in Motor Vehicle Accident Reconstruction and Litigation. Tucson, Ariz.: Lawyers & Judges Publishing, 2001.
"The Role of Forensic Evidence in Proving Fault in Car Accident Cases." Allan Berger & Associates, 3 Sept. 2023, www.bergerlawnola.com/the-role-of-forensic-evidence-in-proving-fault-in-car-accident-cases. Accessed 15 Aug. 2024.
Sullivan, Wilson T. Crime Scene Analysis: Practical Procedures and Techniques. Upper Saddle River, N.J.: Pearson Prentice Hall, 2007.
Van Kirk, Donald, J. Vehicular Accident Investigation and Reconstruction. Boca Raton, Fla.: CRC Press, 2001.