No Streetlights for Miles: Driving the Rural North After Dark

City drivers rarely touch the high-beam stalk. Out on the valley farm roads, the foothill highways and the North Coast, there are no streetlights for miles, and the difference between low and high beams is the difference between seeing a deer and hitting it. California's rule is short, and it is more permissive than many drivers think.

The rule, in full

Vehicle Code section 24409 starts with a duty, not a restriction. When driving in darkness, you must use a beam aimed high enough and bright enough to reveal people and vehicles at a safe distance ahead. Then come the two limits:

• Oncoming traffic: within 500 feet of an oncoming vehicle, use a beam aimed so its glare does not shine into the other driver's eyes. The law treats the lowest beam as avoiding glare regardless of the road's shape.
• Following: within 300 feet of a vehicle ahead of you, use the lowest beam.

Read together, the message is clear. On an empty, dark road, high beams are not rude; they are what the first sentence of the law expects.

Out-driving your headlights

Low beams light a much shorter stretch of road than most people assume, and at highway speed you can cover it in a couple of seconds. If something is standing in the lane at the edge of that pool of light, you may not be able to stop in time. On a dark road, either use high beams or slow to a speed where you can stop within what your low beams show you.

Fog is the exception. In tule fog or coastal fog, high beams bounce off the water droplets and throw a white wall back at you, so low beams are the right choice there, along with a speed that matches what you can actually see. Rain at night is similar: if the high beams make the glare worse, drop them and slow down.

Curves, crests and oncoming glare

On winding foothill and coast roads, oncoming cars appear suddenly around curves and over hills. Dip early as you approach a blind curve or crest, so the other driver is not blinded the moment they appear. When someone fails to dip for you, look toward the white edge line on your right and slow down until they pass, rather than staring into their lights.

A dirty or pitted windshield makes glare much worse, as do badly aimed headlights, especially on a loaded truck. Automatic high-beam systems help, but they can be slow to react on curves; the 500- and 300-foot distances still apply to you, so override the system when it lags.

What is out there after dark

• Deer, most of all at dawn and dusk along foothill and North Bay roads.
• Cattle on unfenced range roads, which are dark-coated and very hard to see.
• Farm equipment moving between fields, sometimes poorly lit.
• Cyclists and pedestrians on shoulders near small towns, often without lights.
• Disabled vehicles sitting half on the road with no lights at all.

When something goes wrong

If you are dazzled and lose sight of the road, slow down, hold your lane by the right edge line, and do not swerve. A run off the road or a hit on a fence or tree is commonly a collision claim. Hitting an animal is commonly handled under comprehensive, though some insurers treat it as collision; it varies by insurance company, so check which applies on your policy and what each deductible is.

If most of your driving is on dark rural roads, make sure your coverage is built for it; you can have your policy checked in a couple of minutes.