Accident involving no driver could still lead to criminal charges

Colorado prosecutors do not need proof that a specific person was sitting behind the wheel at the moment of impact to move forward with criminal charges after a crash. When a vehicle strikes a person or property, investigators look at who was responsible for operating, parking, or securing that vehicle, and a person can face charges such as careless driving resulting in injury or death even when the vehicle was unoccupied at the moment it caused harm.

At Shazam Kianpour & Associates, P.C., we defend clients across the Denver area who are facing serious traffic and criminal charges connected to a vehicle they were not physically driving at the time of a crash, including cases involving a parked car that rolled, a vehicle equipped with driver-assist features, and disputed questions about who last had control of the car. Our criminal defense team has reviewed how Colorado law enforcement builds these unusual cases, and we know what evidence prosecutors typically rely on when no driver was seen behind the wheel at the scene.

How Colorado Prosecutors Build a Case Without a Driver at the Scene

When officers respond to a crash and cannot immediately locate a driver, the investigation does not end there. Detectives can pull surveillance footage from nearby businesses, parking structures, or traffic cameras to reconstruct what happened before, during, and after the collision. In many cases, that footage becomes the single most important piece of evidence in the entire file, since it can show whether anyone approached the vehicle before it moved.

Evidence Officers Rely on Most

Beyond video, investigators typically review vehicle registration and ownership records, since a license plate or vehicle identification number can quickly connect a car to its registered owner. Many newer vehicles also store event data recorder information, sometimes called black box data, which can show a vehicle’s speed, braking activity, and gear position in the seconds before a crash. Cell phone location records and statements from witnesses near the scene can further help investigators narrow down who was near the vehicle and when.

Investigators also look at who had access to the keys, who parked the vehicle, and who was last known to operate it before the crash. A registered owner can be questioned even if a family member, employee, or friend was the one who actually parked the car that day. None of this evidence guarantees a conviction on its own, but together it can be enough for a prosecutor to file charges and ask a court to sort out where responsibility ultimately falls.

Digital Evidence and Cell Phone Records

Modern investigations often extend beyond the vehicle itself. Cell phone tower records and app-based location history can show which devices, and by extension which people, were near the vehicle in the hours before it moved. Text messages, rideshare app activity, and even smart home devices at nearby properties can sometimes corroborate or contradict a person’s account of where they were at the time of the crash. Investigators piece these sources together to build a timeline, and inconsistencies in that timeline can become a central issue at trial.

Careless Driving Resulting in Injury or Death Under Colorado Law

Colorado addresses careless driving under C.R.S. 42-4-1402, which covers operating or leaving a vehicle in a careless and imprudent manner without due regard for traffic, road conditions, and other circumstances. On its own, a careless driving charge is a lower-level traffic offense. When a person’s careless conduct is the proximate cause of injury or death to another person, however, the charge can be elevated to a more serious misdemeanor that carries the possibility of time in county jail, a fine, and a lasting mark on that person’s driving record.

What Prosecutors Must Prove

The legal question in these cases centers on whether a specific person’s careless act, such as failing to secure a parked vehicle or leaving it in a condition where it could move on its own, contributed to the crash. Prosecutors carry the burden of proving both that a person acted carelessly and that this carelessness proximately caused the resulting harm. Colorado courts have applied this statute to conduct that occurs off the public roadway, including in parking lots and on private property, which means the location of a crash does not automatically place it outside the reach of the law.

Potential Penalties for a Careless Driving Conviction

When careless driving results in death, the offense is generally treated as a class 1 misdemeanor traffic offense, which can carry the possibility of county jail time, court costs, and a substantial fine, along with points against a person’s driving record. A conviction can also affect employment, insurance rates, and, in some cases, professional licensing. Because these consequences can follow a person for years, reviewing every element the prosecution must prove, and every gap in that proof, is a central part of building a defense.

When an Unattended or Improperly Parked Vehicle Causes a Crash

A vehicle that rolls forward or backward without a driver inside is rarely a mystery once investigators start asking questions. Something set the vehicle in motion, whether that was a mechanical issue, an incline combined with an unset parking brake, or a transmission that was not fully shifted into park. Determining which of these factors was most likely responsible is often the central issue in these cases, and it can significantly affect whether charges are filed and against whom.

Depending on the facts, an investigation into an unoccupied vehicle that caused a crash may examine:

• Whether the parking brake or transmission was properly engaged before the vehicle was left unattended
• Whether keys or a key fob were left in a location that made it easy for the vehicle to be moved by someone else
• Whether a documented mechanical defect, rather than a person’s actions, was the more likely cause of the vehicle rolling

Each of these questions can shift responsibility away from the registered owner and toward a manufacturer, a repair shop, or another party entirely, which is why a full review of the vehicle’s maintenance history and mechanical condition matters in these cases. A qualified mechanic or accident reconstruction professional can sometimes identify a defect that a prosecutor’s initial theory overlooked.

Hit and Run Allegations and the Duty to Report a Crash

When officers cannot find a driver at the scene of a crash, they may initially treat the case as a possible hit-and-run, since Colorado law requires a driver involved in a crash to stop, remain at the scene, and exchange information or render aid when someone is injured. As an investigation develops, officers may determine that no driver was present at all, which changes the legal analysis significantly, since leaving-the-scene charges generally require proof that a driver was actually operating the vehicle and chose to leave afterward.

What Counts as Leaving the Scene of a Crash

Leaving-the-scene charges focus on a driver’s actions after a crash occurs, not simply on whether a driver was present at the moment of impact. If evidence shows that no one was in the vehicle when it moved, a hit-and-run theory may not fit the facts, and the case may shift toward a careless driving or unattended vehicle theory instead. This distinction matters because the potential penalties, and the defenses available, can look very different depending on which theory a prosecutor ultimately pursues.

A person who reasonably believed their vehicle was properly parked and secured is in a very different legal position than someone who left the scene of a crash they knew they caused. Sorting out which situation actually applies often requires a careful review of the timeline, the vehicle’s condition, and any statements made to police in the hours immediately following the crash.

How Colorado Law Treats Self-Driving and Driver-Assist Vehicles

As vehicles equipped with automated driving features become more common on Colorado roads, the state has been clear that responsibility does not disappear simply because a driver was not actively steering. According to a February 2026 statement from the Colorado State Patrol, drivers remain legally responsible for a vehicle’s safe operation even when automated features are engaged, and troopers will still cite the person expected to be in control if that person failed to take over when required, ignored alerts, or was distracted.

Levels of Automation Under Colorado Senate Bill 17-213

Colorado Senate Bill 17-213 permits automation levels zero through three to operate on state roads as long as a human driver is present and capable of taking control at any time. Levels four and five may operate with or without a human driver present, provided the system can meet applicable state and federal requirements. For a driver-assist vehicle involved in a crash, the legal analysis can involve both the human operator’s conduct leading up to the incident and, in some circumstances, questions about whether the vehicle’s technology performed as the manufacturer intended.

Autonomous vehicle testing and limited robotaxi service have already begun expanding into the Denver metro area, which means these questions are no longer hypothetical for Colorado drivers and pedestrians. When one of these vehicles is involved in a crash, the vehicle’s own sensors and onboard systems may have recorded detailed data about what it detected and how it responded in the moments before impact. That data can become important evidence, but it is typically controlled by the manufacturer or operator rather than by the person who was affected by the crash, which can make it harder to obtain without prompt legal action.

Criminal Charges Versus Civil Liability After a Crash

A crash involving an unoccupied or driverless vehicle can lead to two separate legal processes that move on different tracks. A criminal case, brought by a district attorney’s office, focuses on whether a person’s conduct violated a specific statute and can result in penalties such as fines, probation, or jail time. A civil claim, brought by an injured party or their family, focuses on compensation for medical bills, lost income, and other losses, and it operates under a different burden of proof.

These two processes do not always reach the same conclusion, and developments in one case do not automatically decide the other. If you are facing a criminal charge connected to a crash, it is worth understanding that any statement you make, or evidence that surfaces, can potentially affect both your criminal case and any related civil matter, which is one more reason to involve an attorney early.

Colorado’s Comparative Negligence Rule

On the civil side, Colorado follows a modified comparative negligence rule, which generally allows an injured party to recover damages as long as they are not found more than 50 percent at fault for the crash. This standard applies to the civil claim, not the criminal case, but the same underlying facts, such as whether a mechanical defect or a person’s carelessness caused a vehicle to move, often get examined from both angles. A finding in a civil case is not binding on a criminal court, and the reverse is also true.

Possible Defenses When You Were Not Behind the Wheel

Facing a criminal charge connected to a vehicle you were not driving raises defense questions that differ from a typical traffic case. A defense may focus on whether the prosecution can actually prove who parked or last controlled the vehicle, since ownership alone does not establish that a specific person committed a careless act. Records showing that someone else had access to the vehicle, or that it was serviced or moved by another party, can raise reasonable doubt about who was responsible for the crash.

Challenging the Prosecution’s Theory of Causation

A defense may also focus on causation, including whether a documented mechanical failure, rather than any person’s conduct, was the more likely explanation for the crash. In cases involving a death, prosecutors sometimes weigh whether the facts support a more serious charge, such as vehicular homicide, which is why an early and thorough review of the evidence matters. Our criminal defense attorneys examine the same investigative record that officers relied on, looking for gaps, alternative explanations, and procedural issues that can affect how a case ultimately resolves.

Timing matters in these cases as well. Surveillance footage is often overwritten on a set schedule, and vehicle data can be altered once a car is moved, repaired, or resold. A defense attorney who becomes involved early can send preservation requests and independently document the vehicle’s condition before that evidence disappears, which can be difficult or impossible to do once weeks or months have passed since the crash.

Your Legal Rights and How We Can Help

If you are contacted by police about a crash involving a vehicle registered to you, you have the right to speak with an attorney before answering questions about who parked the car, who had access to it, or what happened before the crash. Anything you say can become part of the investigative record, and an early misstatement can be difficult to walk back later. A conviction connected to these charges can also affect your driver’s license, which is why reviewing your options for a DMV hearing alongside your criminal case is often part of a complete defense strategy.

Our founding attorney, Shazam Kianpour, has spent close to two decades reviewing cases like these for Denver-area clients, and our team can walk you through what the evidence in your specific file actually shows before you decide how to respond to an investigation.

Frequently Asked Questions About Criminal Charges After a Driverless Vehicle Crash

Attorney Shazam Kianpour founded Shazam Kianpour & Associates, P.C. in 2004 and has represented clients in more than 10,000 criminal and traffic cases across the Denver area since then. He is admitted to practice before the Colorado Bar and the U.S. District Court for the District of Colorado, and he has been recognized with a Lead Counsel Verification in criminal law covering state felony, misdemeanor, and drunk driving defense. Our team has handled cases involving unusual fact patterns, including crashes where the person facing charges was not behind the wheel, and we bring that background to every case file we review.

If you are under investigation or have been charged with a crime connected to a vehicle you were not driving at the time of a crash, the sooner an attorney reviews the evidence against you, the more options you may have. Reach out to our team through our contact form to discuss your situation.