Normally the drive home at night is uneventful. Tonight was different. A multi-vehicle accident (complete with fire trucks, ambulances, tow trucks, and highway patrol cars) caused a traffic jam that impacted motorists in four lanes on the northbound freeway. And the backup started just as I entered the freeway.
My nightly commute should take between 25 and 30 minutes. Tonight I managed to drive only three tenths of a mile in 30 minutes. I believe that is about three thousand feet per hour. Luckily, once I drove past the wreck and tow truck, things improved dramatically. The remainder of the commute took about 20 minutes.