When You Can't See

Southern California isn't known for hazardous weather, which is exactly why its two genuine visibility problems catch people unprepared.

Sun glare

Low sun during morning and evening commutes can wash out a windshield almost completely, and the effect is worse on east-west corridors at certain times of year. It arrives predictably and is still routinely underestimated.

The corridors that suffer worst run east-west, and those roads point at the sun twice a day: the 10 out of downtown Los Angeles toward Santa Monica, the 60 and the 91 across Riverside County, the 210 along the foot of the San Gabriels. Much of the glare is reflected, too, and brake lights vanish into it.

What helps: a genuinely clean windshield inside and out — interior film scatters light badly and is the most-neglected fix. Sunglasses that actually cut glare. Increased following distance during those windows. Replacing wiper blades before they smear rather than after.

The marine layer

Coastal fog can reduce visibility sharply and often sits in patches — clear, then not, then clear again within a short stretch. The patchiness is what makes it dangerous, because speed chosen in clear air arrives in fog.

May and June are the reliable months: thick at first light, burning off inland by mid-morning, often still on the water at four. Pacific Coast Highway, the 405 and the 5 near the water through Orange County, the coastal run through San Diego County. Canyon mouths too, where fog pours through a gap and the road goes from clear to blind.

What helps: low beams, not high beams — high beams reflect back off water droplets and make it worse. Slow down before you're in it. Use the right-hand line as a guide rather than staring at the center. Increase following distance well beyond what feels necessary.

The claims angle

Reduced visibility rarely removes responsibility. Drivers are generally expected to operate at a speed appropriate to conditions, so "I couldn't see" tends not to work as a defense — it describes a reason to have slowed down.

The statute says so directly. Vehicle Code section 22350, California's basic speed law, prohibits driving at a speed greater than is reasonable or prudent having due regard for weather, visibility and traffic. The posted number is a ceiling, not a permission.

The honest summary

Both conditions are predictable and both are survivable with following distance and speed. Those two levers do more than anything else available to you.

And make sure your coverage is sound before a morning where it matters.

The glass in front of you is a coverage question too

A windshield in poor condition makes both of these worse, and it is the part you can fix in advance. Chips spread, and this climate is hard on them: a car that bakes in an Inland Empire lot and then gets a blast of cold air is how a quiet star becomes a crack. How a policy treats glass varies a great deal between carriers, so ask yours before you need to know. And if there is a camera behind your mirror for lane-keeping or automatic braking, a windshield replacement generally means recalibrating it afterward.