Roadside Emergency Signal Builder

Get your action plan for signaling, visibility, and safety.

Five quick inputs. One clear, ordered checklist. No guesswork when your car stops and the road keeps moving.

Private. Runs in your browser. No account. No tracking.

Build your roadside action plan

Pick a preset to see a full plan in one click, then adjust the inputs to match your actual situation. The action plan updates live and explains why each step comes in the order it does.

Where did you stop?

What time and conditions?

What gear do you have?

Who is with you?

Cell service?

Distance to safe spot or exit

Your prioritized action plan

Common mistakes that increase your danger

These are the actions people take most often after a breakdown that put them at greater risk. If you catch yourself thinking about doing any of these, stop and follow your action plan instead.

Standing behind the vehicle. On a highway shoulder, the area behind the car is a blind spot for exiting traffic. Stay inside or move well in front of or far to the side of the vehicle, never behind it.
Walking along the highway to find help. Pedestrians on high-speed roads are at extreme risk. Only walk if you can see a safe destination (gas station, rest area) within a short distance and you can stay well off the pavement.
Opening the hood on a narrow shoulder. It signals distress to strangers but also pushes you closer to traffic. On a highway, skip it and rely on hazard lights and flares.
Turning off the engine in extreme cold. If you are stuck in snow or freezing temperatures, keep the engine running for heat and point the exhaust pipe away from the cabin. Clear the tailpipe if snow is blocking it.
Accepting a ride from a stranger. Politely decline. Stay with your vehicle if it is safe. A visible vehicle with hazards on is easier for emergency services to spot than a person walking alone.
Not calling for help because you think you can fix it. Mechanical fixes on a busy shoulder are dangerous. Call roadside assistance first, then attempt anything only if you have a safe, wide area to work in.

Quick reference: what to keep in your vehicle

Before your next trip, check that you have at least the essentials. You do not need everything on this list to be safe, but each item adds a layer of protection.

Visibility

LED roadside flares or warning triangles
High-visibility vest
Bright cloth or flag for antenna
Flashlight with fresh batteries

Communication

Charged phone and car charger
Offline maps downloaded
Roadside assistance number saved
Power bank for long waits

Weather survival

Blanket or sleeping bag
Warm layers and rain shell
Water and snacks for 24 hours
Cat litter or sand for tire traction

Documentation

Printed copy of this action plan
Insurance and registration
Emergency contact card
Local tow service numbers

Questions people ask before and during a breakdown

What if my hazard lights do not work?: Place flares, triangles, or LED lights behind your vehicle immediately. If you have none, tie a bright cloth to the antenna or door handle and call roadside assistance as soon as possible. Do not drive without hazard lights.
Should I set flares in rain?: Yes. Rain reduces visibility for other drivers even more than it reduces yours. LED flares are waterproof and safer than pyro flares in wet conditions. Place them at the distances your plan suggests, and add extra distance if the rain is heavy.
When is it safer to leave the car?: Only when staying in the vehicle is more dangerous than leaving. Examples: smoke from the engine bay, fire, or if you are stopped in a lane with no shoulder and traffic is approaching fast. If you must exit, move away from traffic and call 911 immediately.
How far behind the car should I place warning triangles?: On a highway, place the first triangle about 100 feet behind the car, the second at 200 feet, and the third at 300 feet if you have them. On a rural road, 50 to 100 feet is usually enough. Never place yourself in traffic lanes to set them.
Can I use this plan outside the United States?: The core sequence (hazards, visibility, communication, shelter) works everywhere. Local laws on flares, triangles, and warning devices vary. Check your destination country's road code before a long trip abroad.

Why this builder exists

Most drivers never practice what to do when the car stops. When it happens, the brain goes into reaction mode and the easiest action wins, not the safest one. This builder exists so you can rehearse once, save the plan, and then have it ready the next time you need it. It is built for solo drivers, road-trippers, rideshare operators, and anyone who wants a clear answer instead of a panic response. The goal is simple: help you signal for help, stay visible, and stay alive until assistance arrives.

Version 1.0. Last reviewed for accuracy: January 2026. This is general guidance, not legal or professional safety advice. Always follow local laws and your vehicle manufacturer's instructions.