Recently, Missoula experienced what felt like a week straight of heavy fog every morning. This is common in the winter because our area is prone to temperature inversions

Driving around one morning I saw about five cars without their headlights on. I flew into a Karen-like rage in the privacy of my vehicle. Then I wondered, do you have to have your headlights on for fog? Is it like, a law?  

Montana Code Addresses "Lamps" on Vehicles

I’m no lawyer, but my initial search took me to code 61-9-217 which talks about the placement of various kinds of “lamps” on a motor vehicle. If you get your kicks reading legalese, you can see exactly what it says right here

But what this headlight question really involves is traffic violations, and has a handy explanation of what constitutes a traffic violation on their site.  

Montana Code "When Lighted Lamps Are Required"

Down the internet rabbit hole I went. I eventually found code 61-9-201 “When Lighted Lamps Are Required.” In a much more formal way, it says basically what this Facebook post from 2015 says:  

They don't mention it in the Facebook post, but another time that drivers in Montana should probably use their headlights is if you're in a wildfire smoke zone. Driving through smoke can be just as difficult as driving through fog.

So then the question is, well, how far is 500 feet? About 1-2 city blocks, depending on how you measure a block.

But here’s the kicker. That code says “highway.” So I'll just say this.

On the morning I was driving in fog, I couldn’t see halfway down the block, and the white vehicle and grey vehicles—without their headlights on—seemed to appear out of nowhere. Were we going to hit each other? Maybe not. Would headlights have helped? Yes. 

If it’s foggy, or smoky, or rainy or whatever, maybe just help a fellow driver out. Please remember to turn on your headlights.  

LOOK: See how much gasoline cost the year you started driving

To find out more about how has the price of gas changed throughout the years, Stacker ran the numbers on the cost of a gallon of gasoline for each of the last 84 years. Using data from the Bureau of Labor Statistics (released in April 2020), we analyzed the average price for a gallon of unleaded regular gasoline from 1976 to 2020 along with the Consumer Price Index (CPI) for unleaded regular gasoline from 1937 to 1976, including the absolute and inflation-adjusted prices for each year.

Read on to explore the cost of gas over time and rediscover just how much a gallon was when you first started driving.

More From Z100 Classic Rock