You might be having peripheral vision changes. Have you had an eye exam recently?Traffic wasn't all that bad really, considering it was after noon/lunch hour on a standard work day. There were "a lot" of cars and trucks when within ~25-30 miles of Dallas proper, but no real slow downs/jams/bumper-to-bumper crawls, even at on/off ramps, where it's generally terrible and extends all the way out to the left most lane. The one thing that I have begun to take much closer (literally) notice of is lane widths...
"The Interstate Highway standards for the U.S. Interstate Highway System use a 12-foot (3.7 m) standard lane width, while narrower lanes are used on lower classification roads. " https://www.google.com/search?q=standard+road+width&ie=utf-8&oe=utf-8&client=firefox-b-1
"This Act provided a maximum vehicle width of 96 inches (2.44 meters) on the Interstate highway system. Subsequently, the Federal-Aid Highway Act of 1976 increased the allowable width for buses to 102 inches (2.6 meters)." https://www.google.com/search?q=standard+vehical+width&ie=utf-8&oe=utf-8&client=firefox-b-1
So there should be, assuming everyone is driving centered in their lane, ~4' of separation between vehicles when side by side. OK, but when they do road construction, they "narrow" all the lanes down to ~10' (or less it seems), cutting the margin for error in half.
Though driving doesn't bother me, I have begun to get very "sensitive" to separation between myself and vehicles that I'm passing or are passing me. Many times I feel I'm much closer than even the 2 foot allowance on narrow roads and there has become a "pucker" factor and the need to pay much closer attention at those times.
OK, that being said, time for me to get off my butt and get outside working. Gonna try to get the roof on the goat shed before we have 3 days of cold rain starting tomorrow. Hope y'all have a great day!