The Roadside Visibility Kit People Forget

Most roadside kits are built around fixing the car. The first problem is being seen before anyone gets to the fixing part.

A warning triangle and a reflective vest are dull, flat, low-status objects. They also address the moment when a car is stopped somewhere other drivers did not expect it to be.

A note on this guide: this rests on how visibility at distance works and on what is commonly required. Requirements differ by country, so check your route. See how we test.

Why this comes before the tools

Every other item in a roadside kit assumes you are already safely able to work. Visibility equipment is what makes that assumption true, which is why it belongs first in the order rather than last.

The risk it addresses is specific: a stationary vehicle in a place moving traffic does not anticipate, often on a bend, a crest, or in poor light. Approaching drivers are scanning for moving traffic and a stopped car reads as part of the background until it is close. Everything about a triangle placed well back is designed to break that — to deliver the warning before the car itself is in view.

Hazard lights help, and they only work once the car is visible. On a blind bend that is already too late.

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The triangle

Placement is the part that varies

Distance requirements differ by country and often by road type, with motorways typically demanding considerably more than an urban street. Rather than memorise a figure that may not apply where you are, hold the principle: the triangle must give an approaching driver enough distance to see it, understand it and react at the speed traffic is actually travelling.

Two practical points that get overlooked:

• Walk facing traffic when placing it, and stay behind the barrier where one exists.
• On a bend or a crest, the useful position is before the obstruction rather than a fixed distance from the car — a triangle around the corner from your vehicle is doing nothing.

The vest

High-visibility clothing is a graded standard, and most cheap car vests are the lower grade. In the US the standard is ANSI/ISEA 107, and the class tells you what the garment was built to be seen against:

The reason Class 3 adds sleeves is not padding out the specification. Movement of the limbs is what lets a driver recognise a human shape rather than a bright object, and at highway closing speeds that recognition is the whole point.

So the class you want depends on the worst road you might break down on, not the average one. A vest kept in a car that ever uses a highway is a Class 3 argument, and a great many vests sold as car accessories are Class 2 or carry no class marking at all — which means they were never tested to hold any particular performance.

One per person, not one per car

If conditions justify a vest at all, they justify one for everyone getting out. Passengers standing at the roadside in dark clothing are exactly as hard to see as the driver would have been. Vests fold to almost nothing and cost very little, so the argument against carrying a set is weak.

The practical setup

Keep the vest where the driver can reach it while seated. Keep the triangle where it will not be buried by luggage. Practice unfolding it once at home, because roadside gear that needs decoding in rain and traffic is poorly stored gear.

That last point deserves more weight than it usually gets. Folding triangles have a knack to them, and the first time you work it out should not be in the dark, in the wet, with traffic passing. Open it once in the driveway and refold it properly.

What this pairs with

Visibility gear gets you safely to the point where the actual problem starts. What that problem usually is, in likelihood order, is covered in the roadside kit for a car that might not start.

A light belongs in the same category of before-the-repair equipment — see rechargeable work lights, and note that a phone used as a torch is a phone you cannot use to call for help.

For the two most common roadside jobs themselves, see tire plug kits worth keeping and portable tire inflators.