Drive 95 miles per hour – Save 12 minutes

a highway sign in Texas showing the 85 mph speed limit

Texas will soon have the highest posted speed limit in the United States (heck, in the Western Hemisphere. Take that, Honduras.) – 85 miles per hour.

In November, Texas will open a new toll road on a heavily-used corridor between Austin and San Antonio, where the current highway (I-35) has a speed limit of 65 miles per hour. The higher speed limit is expected to appeal to drivers looking to shave some time off their drive. The new toll road will look especially attractive since the old highway’s speed limit will be reduced to 55 miles per hour. Pretty clever.

But how much time will drivers of the new toll road actually save? Not as much as you might think.

First, the new road is pretty short, only 41 miles long. Let’s assume that people will travel 10 miles per hour over each posted limit, not uncommon in Texas, and maybe even a bit conservative.

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