{"id":15798,"date":"2026-05-08T19:55:01","date_gmt":"2026-05-09T00:55:01","guid":{"rendered":"https:\/\/www.myphillylawyer.com\/practice-areas\/bicycle-accidents\/evidence-used-in-bicycle-accident-cases\/"},"modified":"2026-05-08T19:55:01","modified_gmt":"2026-05-09T00:55:01","slug":"%e8%87%aa%e8%a1%8c%e8%bd%a6%e4%ba%8b%e6%95%85%e6%a1%88%e4%bb%b6%e4%b8%ad%e4%bd%bf%e7%94%a8%e7%9a%84%e8%af%81%e6%8d%ae","status":"publish","type":"page","link":"https:\/\/www.myphillylawyer.com\/zh\/practice-areas\/bicycle-accidents\/evidence-used-in-bicycle-accident-cases\/","title":{"rendered":"\u81ea\u884c\u8f66\u4e8b\u6545\u6848\u4ef6\u4e2d\u4f7f\u7528\u7684\u8bc1\u636e"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Cyclists on Philadelphia streets face real dangers every day, from busy intersections near City Hall to high-speed corridors like Roosevelt Boulevard and Spruce Street. According to PennDOT, bicyclist fatalities in Pennsylvania increased from 19 in 2024 to 28 in 2025. When a crash happens, the outcome of your claim depends heavily on the evidence you and your attorney can gather. Strong evidence is what separates a fully compensated cyclist from one who walks away with nothing. If you were hurt on a bike in Philadelphia, a <a href=\"https:\/\/www.myphillylawyer.com\/\">Philadelphia personal injury lawyer<\/a> at MyPhillyLawyer can help you build the strongest possible case from day one.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Table of Contents<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#the-police-crash-report-your-first-and-most-important-document\">The Police Crash Report: Your First and Most Important Document<\/a><\/li>\n<li><a href=\"#photographic-and-video-evidence-what-the-camera-captures-can-win-your-case\">Photographic and Video Evidence: What the Camera Captures Can Win Your Case<\/a><\/li>\n<li><a href=\"#medical-records-and-expert-testimony-proving-the-extent-of-your-injuries\">Medical Records and Expert Testimony: Proving the Extent of Your Injuries<\/a><\/li>\n<li><a href=\"#witness-testimony-and-driver-conduct-evidence-building-the-full-picture\">Witness Testimony and Driver Conduct Evidence: Building the Full Picture<\/a><\/li>\n<li><a href=\"#physical-scene-evidence-and-electronic-data-what-stays-at-the-crash-site\">Physical Scene Evidence and Electronic Data: What Stays at the Crash Site<\/a><\/li>\n<li><a href=\"#faqs-about-evidence-used-in-bicycle-accident-cases-in-philadelphia\">FAQs About Evidence Used in Bicycle Accident Cases in Philadelphia<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-police-crash-report-your-first-and-most-important-document\">The Police Crash Report: Your First and Most Important Document<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The police crash report is the foundation of almost every bicycle accident claim in Pennsylvania. When officers respond to a crash, they are required to document what happened in a formal report. Under Section 3751 of Title 75 of Pennsylvania&#8217;s Consolidated Statutes, police agencies must investigate all crashes involving death, injury, or damage so severe that a vehicle requires towing from the scene. That report becomes one of the first documents an insurance company will request.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In Pennsylvania, officers responding to a crash typically prepare a Pennsylvania State Police Crash Report, Form AA-500, which includes the date, time, location, vehicle information, weather conditions, and a narrative summary from the officer. For crashes in Philadelphia, the Philadelphia Police Department handles the report, not the State Police. You can request a copy from the Philadelphia Police Department directly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The report records witness statements, any citations issued to the driver, road conditions, and the officer&#8217;s observations. It does not legally determine fault, but it carries serious weight. Insurance adjusters treat it as a baseline, and defense attorneys will use it to challenge your version of events. If the report contains errors, you have the right to dispute them by submitting additional evidence or statements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One critical point: if a driver hits you and flees, you still need a report. Under Pennsylvania law, you can file a report within five days of the crash. Without it, your ability to recover compensation, including through Pennsylvania&#8217;s uninsured motorist coverage, becomes far more difficult. Call the police at the scene whenever possible, and always get the report number before leaving.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"photographic-and-video-evidence-what-the-camera-captures-can-win-your-case\">Photographic and Video Evidence: What the Camera Captures Can Win Your Case<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Photographs and video footage are among the most persuasive forms of evidence in a bicycle accident case. A picture taken right after a crash shows the truth before anything is moved, cleaned up, or repaired. If you are physically able to do so after a crash, photograph everything: the driver&#8217;s vehicle and license plate, your damaged bicycle, your injuries, skid marks, road conditions, traffic signs, and the overall scene from multiple angles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Video evidence is even more powerful. Philadelphia has traffic cameras at many major intersections, including along Broad Street, Market Street, and the corridors near 30th Street Station and Penn&#8217;s Landing. Businesses along Chestnut Street, South Street, and throughout Center City often have exterior surveillance cameras that may have captured your crash. That footage can show exactly how the collision happened, including whether the driver ran a red light, failed to yield, or was distracted.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dashcam footage from other vehicles is another source. Witnesses who were driving nearby may have recorded the crash without even realizing it. Cyclists who use helmet cameras or handlebar-mounted cameras may have first-person footage of the entire event. This kind of direct visual evidence is extremely difficult for the other side to dispute.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Time is critical. Surveillance footage is typically overwritten within days or weeks. A letter preserving that evidence must be sent to the business or agency quickly. MyPhillyLawyer acts fast to identify and preserve video evidence before it disappears. Do not wait to contact us after a crash on Kelly Drive, near a University City intersection, or anywhere else in Philadelphia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"medical-records-and-expert-testimony-proving-the-extent-of-your-injuries\">Medical Records and Expert Testimony: Proving the Extent of Your Injuries<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Medical records do two things in a bicycle accident case. They prove that you were injured, and they connect those injuries directly to the crash. Every emergency room visit, diagnostic image, physician note, physical therapy record, and prescription creates a documented trail that supports your claim for compensation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gaps in treatment hurt your case. If you wait weeks to see a doctor after a crash near Fairmount Park or after a dooring incident in South Philadelphia, the defense will argue your injuries were not serious or were caused by something else. Seek medical attention immediately, follow your doctor&#8217;s instructions, and keep all records.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For serious injuries, including traumatic brain injuries, spinal cord damage, or broken bones, expert medical testimony may be required to explain the long-term impact of your injuries to a jury. Pennsylvania courts expect this kind of expert support in complex injury cases. An expert can speak to future medical costs, limitations on your ability to work, and the permanent nature of your injuries.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Accident reconstruction experts are also commonly used in bicycle crash cases. They analyze physical evidence, vehicle damage, skid marks, and road geometry to recreate how the crash occurred. This type of expert testimony is especially useful when a driver disputes fault or claims the cyclist was to blame. Along roads like Roosevelt Boulevard, where speeds are high and crashes are severe, reconstruction analysis can make the difference between winning and losing a case.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"witness-testimony-and-driver-conduct-evidence-building-the-full-picture\">Witness Testimony and Driver Conduct Evidence: Building the Full Picture<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Eyewitnesses give your case a human voice. A bystander who saw a driver blow through a stop sign near Rittenhouse Square or cut off a cyclist on Germantown Avenue provides testimony that is independent and credible. Collect names and contact information from anyone who witnessed the crash. If police arrive, make sure they interview those witnesses and include their statements in the report.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pennsylvania courts evaluate witness credibility carefully. Factors like the witness&#8217;s vantage point, lighting conditions, and whether their account has been consistent all affect how much weight their testimony carries. A witness who was standing at a bus stop with a clear line of sight to the collision is far more valuable than one who glimpsed the crash from a distance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Beyond eyewitnesses, evidence of driver conduct before the crash matters. Cell phone records can show whether a driver was texting. Toxicology reports can confirm alcohol or drug impairment. Traffic citations issued at the scene are powerful admissions of wrongdoing. For commercial drivers, their employer&#8217;s records, including driving history and compliance with federal regulations under 49 CFR Part 391, may reveal a pattern of unsafe behavior that strengthens a negligence claim.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Under Pennsylvania&#8217;s comparative negligence rule, codified at 42 Pa. C.S. \u00a7 7102, your damages are reduced by your percentage of fault. If a jury finds you 20% responsible for a crash, your award is reduced by 20%. If your fault exceeds 50%, you recover nothing. This is why evidence of the driver&#8217;s conduct, not just the crash itself, is so important. The more clearly you can show the driver was at fault, the better your outcome.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"physical-scene-evidence-and-electronic-data-what-stays-at-the-crash-site\">Physical Scene Evidence and Electronic Data: What Stays at the Crash Site<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The crash scene itself holds evidence that tells the story of what happened. Skid marks reveal how fast a driver was traveling and when they braked. Debris patterns show the point of impact. Damaged guardrails, broken curbs, or paint transfers from a vehicle to your bicycle all help reconstruct the sequence of events. This physical evidence begins to disappear quickly, especially in a busy city like Philadelphia where road crews and traffic move constantly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Modern vehicles contain event data recorders, commonly called black boxes, that capture speed, braking, and steering data in the seconds before a crash. This data can confirm or contradict what a driver claims happened. Obtaining it requires prompt legal action, because vehicle owners and insurers are not required to preserve it indefinitely. An attorney needs to send a spoliation letter to the defendant quickly to prevent that data from being lost.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For crashes involving rideshare drivers, delivery vehicles, or commercial trucks operating on streets like Aramingo Avenue or near the Philadelphia Navy Yard, GPS and dispatch records can show a driver&#8217;s route, speed, and stops. These records are held by companies and must be requested through formal discovery or preservation letters.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding how all of this evidence fits together, and how to use it under Pennsylvania law, requires experience with bicycle accident claims. The <a href=\"https:\/\/www.myphillylawyer.com\/practice-areas\/vehicle-accidents\/\">car accident lawyer<\/a> team at MyPhillyLawyer handles bicycle crash cases throughout Philadelphia, including on the <a href=\"https:\/\/www.myphillylawyer.com\/practice-areas\/vehicle-accidents\/the-most-dangerous-intersections-and-roads-in-philadelphia\/\">most dangerous roads in Philadelphia<\/a>. We gather evidence fast, preserve it properly, and build claims that hold up. Call us at (215) 227-2727 or Toll Free: 866-352-4572 for a free consultation. There is no fee unless we recover compensation for you.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faqs-about-evidence-used-in-bicycle-accident-cases-in-philadelphia\">FAQs About Evidence Used in Bicycle Accident Cases in Philadelphia<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">How long does video surveillance footage last before it gets deleted?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Most businesses and city systems overwrite surveillance footage within 24 to 72 hours, though some systems retain footage for up to 30 days. Traffic camera footage managed by city agencies may be retained slightly longer, but there is no guarantee. This is why contacting an attorney as soon as possible after a bicycle accident is critical. An attorney can send a legal preservation notice to the relevant parties quickly, before the footage is gone.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Does the police report determine who is at fault in a Pennsylvania bicycle accident?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. The police report does not legally determine fault. It is an official record of observations, statements, and conditions at the scene, and it carries real weight with insurance companies. However, it is not binding on a court. If the report contains errors or a fault code that does not accurately reflect what happened, your attorney can challenge it with additional evidence, including video footage, witness statements, and expert analysis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can a driver&#8217;s cell phone records be used as evidence in a bicycle accident case?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. Cell phone records can be subpoenaed during litigation to show whether a driver was texting or calling at the time of the crash. In Pennsylvania, distracted driving is a recognized cause of negligence, and phone records that show activity in the moments before impact can be powerful evidence. Obtaining these records requires formal legal discovery, which is one more reason to hire an attorney promptly after a crash.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What happens to my case if I was partially at fault for the bicycle accident?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pennsylvania follows modified comparative negligence under 42 Pa. C.S. \u00a7 7102. Your damages are reduced by your percentage of fault. For example, if you are found 25% at fault and your total damages are $100,000, you would recover $75,000. If your fault exceeds 50%, you cannot recover anything. This makes it essential to build the strongest possible evidence record showing the driver&#8217;s responsibility for the crash.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How soon after a bicycle accident should I contact a lawyer in Philadelphia?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You should contact a lawyer as soon as possible, ideally within days of the crash. Evidence disappears quickly, surveillance footage gets overwritten, witnesses forget details, and physical evidence at the scene changes. Pennsylvania&#8217;s statute of limitations under 42 Pa. C.S. \u00a7 5524 generally gives you two years from the date of the injury to file a personal injury lawsuit, but waiting that long puts your evidence at serious risk. Acting quickly gives your attorney the best chance to preserve everything needed to support your claim. Call MyPhillyLawyer at (215) 227-2727 for a free consultation.<\/p>\n\n\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How long does video surveillance footage last before it gets deleted?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most businesses and city systems overwrite surveillance footage within 24 to 72 hours, though some systems retain footage for up to 30 days. Traffic camera footage managed by city agencies may be retained slightly longer, but there is no guarantee. This is why contacting an attorney as soon as possible after a bicycle accident is critical. 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Cell phone records can be subpoenaed during litigation to show whether a driver was texting or calling at the time of the crash. In Pennsylvania, distracted driving is a recognized cause of negligence, and phone records that show activity in the moments before impact can be powerful evidence. Obtaining these records requires formal legal discovery, which is one more reason to hire an attorney promptly after a crash.\"}},{\"@type\":\"Question\",\"name\":\"What happens to my case if I was partially at fault for the bicycle accident?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Pennsylvania follows modified comparative negligence under 42 Pa. C.S. \u00a7 7102. Your damages are reduced by your percentage of fault. For example, if you are found 25% at fault and your total damages are $100,000, you would recover $75,000. If your fault exceeds 50%, you cannot recover anything. 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When a crash happens, the outcome of your claim depends heavily on the evidence you&hellip;<\/p>","protected":false},"author":18,"featured_media":0,"parent":257,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-15798","page","type-page","status-publish","hentry"],"acf":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.myphillylawyer.com\/zh\/wp-json\/wp\/v2\/pages\/15798","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.myphillylawyer.com\/zh\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.myphillylawyer.com\/zh\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.myphillylawyer.com\/zh\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/www.myphillylawyer.com\/zh\/wp-json\/wp\/v2\/comments?post=15798"}],"version-history":[{"count":0,"href":"https:\/\/www.myphillylawyer.com\/zh\/wp-json\/wp\/v2\/pages\/15798\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.myphillylawyer.com\/zh\/wp-json\/wp\/v2\/pages\/257"}],"wp:attachment":[{"href":"https:\/\/www.myphillylawyer.com\/zh\/wp-json\/wp\/v2\/media?parent=15798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}