What to do after a bike crash: a minute-by-minute plan

The first minute: get safe, then stay still and take stock

Crashes are loud and fast, and the adrenaline that follows can hide pain. The first job is to avoid a second collision. If you are lying in a traffic lane and you can move without pain in your neck or back, get yourself and, if it is easy, your bike to the shoulder, a sidewalk or the grass. If moving hurts your neck or back, or you feel tingling or numbness anywhere, stay where you are, call 911, and ask anyone nearby to warn traffic.

Once you are out of the road, sit down and give yourself a minute before you try to stand. Riders often jump straight up, wave off help and remount, then discover a broken collarbone or a concussion an hour later. A slow check now costs nothing.

When to call 911 after a bike crash

Call 911 first if you or someone else is hurt. Do not wait to message family, post about it, or check whether your bike still shifts. The UK's NHS tells people to call emergency services after a head injury when someone has been knocked out and has not woken up, cannot stay awake, has a seizure, has vision or hearing problems, has clear fluid or blood coming from the ears or nose, has new numbness or weakness, has trouble walking, speaking or understanding, or hit their head at high speed, such as in a road accident. A crash with a car at road speed fits that last point by itself.

If you cannot tell the dispatcher an exact address, give the road name, the nearest cross street or mile marker, and which direction you were riding. Keep it short and let them lead: "I'm a cyclist, I've crashed on County Road 12, about a mile north of the Route 9 junction, heading north. I hit my head and my neck hurts." Stay on the line and answer their questions. Our answer on how to call 911 if you do not know where you are covers what to say, and can you text 911 explains when texting works if speaking is hard.

• You were knocked out, even briefly, or you cannot remember the crash
• Your helmet shows an impact and you have a headache, dizziness, nausea or confusion
• Neck or back pain, numbness, tingling or weakness in any limb
• Bleeding that does not stop with firm pressure
• A limb that looks deformed or cannot bear weight
• Trouble breathing or chest pain
• A car, truck or another rider at speed was involved

Head injury: the part riders underestimate

A helmet reduces the risk of serious head injury, but it does not make a concussion impossible. Symptoms can be mild at first and build over hours. The CDC lists headache, dizziness or balance problems, nausea, sensitivity to light or noise, feeling foggy or slowed down, and trouble concentrating or remembering among the common signs of a concussion.

The CDC also lists danger signs in adults that mean you should get emergency care right away: a headache that gets worse and does not go away; weakness, numbness, decreased coordination, convulsions or seizures; repeated vomiting; slurred speech or unusual behavior; one pupil larger than the other; confusion, restlessness or agitation; and losing consciousness or being very drowsy. The CDC notes that in rare cases a dangerous blood clot can form after a head injury, which is why symptoms that get worse matter so much.

If you hit your head and decide you do not need 911, you still should not be alone. The NHS advises that someone stays with you for at least the first 24 hours after a head injury, that you rest, and that you do not drive until you feel fully recovered. Riding home solo after a head knock is a bad bet. Call someone to pick you up, and talk to your doctor or an urgent care clinic the same day. If you take blood thinners, the NHS advises getting medical advice after any head injury.

Tell your people where you are

Once emergency help is on the way, or you are sure you do not need it, let someone know what happened and where you are. A crash on a quiet road is exactly the moment when a live location link earns its place: the person you message can see your exact spot instead of trying to follow a description.

Keep the first message short and specific so nobody has to ask follow-up questions: "Crashed on the bike, I'm OK but sore. I'm at the corner of Oak and 5th, sitting on the grass. Can you come get me? Bike is fine, I'm not riding it." If you did call 911, say so: "Ambulance is on the way, I'll text which hospital."

If you were already sharing your ride with Holler, your Guardians can open the live link in any browser and see where you stopped. Holler's SOS button notifies your Guardians with your location in one tap, which helps if you are shaken and typing is hard. It does not call 911 for you. If the crash left you unable to reach your phone at all, the tools that matter are the ones you set up before the ride: a return time that sends your Guardians an overdue alert, an optional stationary alert, or crash detection options for cyclists, including Holler's opt-in crash detection (beta), which can miss real crashes and can false-alarm.

Our broader guide to getting help if you get hurt while cycling alone walks through the options when nobody is around, and what to do if you fall while cycling alone is the short checklist. Off road, the details change: see what to do if you fall while mountain biking alone.

Document the scene while it is fresh

If a driver was involved, or if a road defect caused the fall, a few minutes of documentation can save a lot of trouble with insurance or a claim later. Only do this if you are not hurt, or once someone else is looking after you. Your health comes before any photo.

Rules on reporting crashes, and on what counts as a reportable crash, vary by state and city. If a vehicle was involved or anyone was hurt, calling the police to the scene is the simplest way to get an official record. If you are unsure what applies where you ride, ask the responding officer or a local attorney later rather than guessing.

• Photos of the scene from several angles, including the road surface, any pothole or debris, skid marks, and where the vehicle stopped
• The driver's name, phone, license plate, insurance details, and a photo of the vehicle
• Names and phone numbers of any witnesses, before they leave
• Photos of your bike, helmet, clothing and visible injuries
• The time, the weather, and the lighting conditions
• Your ride file from your bike computer or phone, which records time, speed and location

Your helmet and your bike after the crash

Replace your helmet after any crash in which your head hit, even if it looks perfect. The Bicycle Helmet Safety Institute explains that the foam in a helmet is made for one-time use and is less protective once it has crushed, and that damage is not always visible. Keep the old one until any insurance claim is settled, since it can be evidence.

Have a bike shop check the bike before you ride it hard again. Carbon frames, forks, handlebars and seatposts can be damaged in ways you cannot see, and a bent derailleur hanger or a knocked wheel can fail on the next descent. On the day of the crash, if the bike feels wrong at all, do not ride it home.

The days after: watch for delayed symptoms

Soreness usually peaks a day or two after a crash. Headaches, sleepiness, irritability or trouble concentrating in the days after a head knock are worth a call to your doctor. Get emergency care right away for any of the danger signs listed above, even if they appear days later.

Ease back into riding. Once you do, the crash is a good prompt to fix the setup that would have helped: an ID on your body, a Medical ID on your phone, a Guardian who knows your usual routes, and a return time on every solo ride. The solo cycling safety guide covers the full setup.

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