T-Bone Accident in Denver: Your Rights After a Side-Impact Crash
T-bone collisions — where the front of one vehicle strikes the side of another — are among the most dangerous crash types because the side of a vehicle offers far less structural protection than the front or rear. Side-impact crashes account for roughly 23% of all passenger vehicle occupant deaths in the United States. In Denver, T-bone accidents happen most often at signalized intersections along corridors like Colfax Avenue, Colorado Boulevard, Federal Boulevard, and at highway interchange ramps on I-25 and I-70. Fault usually comes down to who had the right of way — running a red light, failing to yield at a stop sign, or making an unsafe left turn. You have 3 years to file a motor vehicle injury claim in Colorado (Colo. Rev. Stat. § 13-80-101).
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Key Takeaways
- T-bone crashes cause disproportionately severe injuries because doors provide far less protection than front or rear crumple zones.
- Fault in T-bone crashes usually turns on who had the right of way — red light violations, stop sign failures, and unsafe left turns are the most common causes.
- Red light camera footage and traffic camera footage at Denver intersections can be critical evidence. Request it quickly before it is overwritten.
- Colorado's 50% comparative fault bar (Colo. Rev. Stat. § 13-21-111) means you recover nothing at 50% or more fault.
- You have 3 years to file a motor vehicle injury claim (Colo. Rev. Stat. § 13-80-101).
- Side-impact airbags and curtain airbags reduce injury severity, but many older vehicles lack these features.
Call 911 and stay at the scene
Call 911 immediately after a T-bone collision. Side-impact crashes frequently cause injuries that are not immediately apparent — internal bleeding, organ damage, and head injuries can be hidden by adrenaline. Tell the dispatcher your location (intersection, cross streets), the number of vehicles, and whether anyone appears seriously injured.
If your vehicle is blocking the intersection and you can safely move it, pull to the nearest curb or parking lot. If the vehicle is too damaged to move or you are injured, stay inside with hazard lights on. Do not attempt to exit into an active intersection with moving traffic.
When police arrive, they will document the scene and take statements. The officer's determination of who ran the red light or failed to yield is often the most important piece of evidence in a T-bone crash. Get the report number before leaving the scene.
Document the intersection and evidence of right-of-way
T-bone crash fault depends almost entirely on who had the right of way. Document everything that proves the other driver violated the traffic signal or sign. Photograph the intersection from multiple angles: traffic signals, stop signs, yield signs, lane markings, and the final resting positions of both vehicles. The point of impact on your vehicle and the angle of the collision tell the story of who entered the intersection and from which direction.
Check for red-light cameras at the intersection. Many Denver intersections have cameras that capture vehicles running red lights — this footage is often the most conclusive evidence in a T-bone case. Ask the investigating officer whether the intersection has cameras. Dashcam footage from either vehicle or from other drivers at the intersection is equally valuable.
Get witness names and phone numbers. Witnesses who saw the traffic signal state (green, yellow, red) at the time of the crash are critical. In many T-bone cases, both drivers claim they had a green light — neutral witness testimony breaks the tie.
Get medical treatment — T-bone injuries are often severe
T-bone collisions cause a distinctive pattern of injuries because the impact strikes the side of the vehicle where there is minimal structural protection. The door, window, and B-pillar are the only barriers between you and the other vehicle's front end. Common T-bone crash injuries include traumatic brain injuries from head striking the window or door frame, hip and pelvic fractures from door intrusion, rib fractures and punctured lungs, spleen and liver lacerations from side impact, shoulder and arm injuries on the impact side, and cervical spine injuries.
Go to a Denver ER immediately after a T-bone crash. Denver Health Medical Center is a Level I trauma center equipped for the most serious injuries. UCHealth and Swedish Medical Center also handle major trauma. If you have any head, chest, or abdominal symptoms — headache, dizziness, chest pain, abdominal tenderness — insist on imaging (CT scan, X-ray).
T-bone crash injuries often require extended treatment: surgery for fractures, rehabilitation for TBI, physical therapy for soft tissue damage. Follow every medical recommendation and attend every appointment. Your medical record is the foundation of your claim value.
Fault determination in T-bone crashes
T-bone crashes at intersections typically involve one clear traffic violation: running a red light, failing to stop at a stop sign, failing to yield during a left turn, or failing to yield from a side street. The driver who violated the right of way is at fault. Police reports, traffic camera footage, and witness statements establish which driver entered the intersection illegally.
Some T-bone crashes involve disputed fault. Both drivers claim a green light. The left-turning driver says they had a gap in traffic, while the oncoming driver says they had the right of way. In these cases, physical evidence matters: the point and angle of impact, skid marks (indicating which driver attempted to brake), vehicle resting positions, and witness testimony.
Colorado's modified comparative negligence rule (Colo. Rev. Stat. § 13-21-111) applies. If you are found partially at fault — for example, you had the green light but were speeding through the intersection — your compensation is reduced by your fault percentage. At 50% or more fault, you recover nothing.
Left-turn T-bone crashes
One of the most common T-bone scenarios in Denver involves a left-turning vehicle striking or being struck by an oncoming vehicle. Under Colorado law, the left-turning driver must yield to oncoming traffic (C.R.S. § 42-4-902). If you were driving straight through an intersection and a left-turning vehicle hit you, the turning driver is almost always at fault.
However, the left-turning driver may argue you were speeding, ran a yellow or red light, or were otherwise difficult to see. If you were the left-turning driver who was hit, you face an uphill fault battle — but circumstances matter. A green left-turn arrow gives you the right of way. A malfunctioning traffic signal may shift fault to the municipality. An obstructed sight line may create shared liability.
Dealing with insurance after a T-bone crash
Report the crash to your own insurer and cooperate with the investigation. The at-fault driver's insurance company will likely contact you. Do not give a recorded statement without understanding your rights. T-bone crash injuries are often severe, and the first settlement offer will not reflect the full value of a serious injury claim.
Colorado's minimum liability coverage is 25/50/15 — $25,000 per person for bodily injury. T-bone crash injuries frequently exceed minimum policy limits. If the at-fault driver's coverage is insufficient, your underinsured motorist (UIM) coverage fills the gap. Check your UIM limits. If the at-fault driver is uninsured (about 11.7% of Colorado drivers), your UM coverage applies.
Key deadlines for T-bone crash claims in Colorado
Colorado's statute of limitations for motor vehicle injury claims is 3 years (Colo. Rev. Stat. § 13-80-101). Wrongful death claims have a 2-year deadline. Government claims require 182-day notice under the CGIA — relevant if a city bus, government vehicle, or malfunctioning city-maintained traffic signal contributed to the crash.
Do not wait to gather evidence. Red-light camera footage and traffic camera recordings are overwritten within days to weeks. Witness memories fade. Request all available footage and file the police report immediately.
Get a free assessment of your T-bone crash claim
Injured in a T-bone collision in Denver? Take our free 2-minute assessment. We will evaluate your claim based on fault, injury severity, and insurance coverage and connect you with a Denver attorney experienced in side-impact collision cases.
T-bone crashes cause some of the most severe injuries on the road because your door is no match for another vehicle's front end. If someone ran a red light, blew a stop sign, or made an unsafe left turn and hit you, Colorado law puts fault squarely on them. Start with the assessment — it is free, confidential, and takes minutes.