Las Vegas / Las Vegas Valley / Nevada / Photography Speed Limit 23 and Smoggy Skies 22nd February 2019 John That odd speed limit sign is at our Las Vegas Motor Speedway north of the Strip on Las Vegas Boulevard. Don’t mind the smog, your in a large city! Breathe deep. These photos make the smog look far worse than it actually is… Share this:LinkedInRedditTwitterLike this:Like Loading...