Natural speed please.
The American weekend officially begins on Friday evening, but already by Friday morning there are signs that the weekend is just around the corner.You see fewer cars on the high ways,and buses and subways are less crowded with people, too. This is because some people take a day off on Friday to have a three weekend.
Things are also different at work. People don't wear the same clothes as they wear on weekends; they dress themselves more casually. For instance, managers in the office may put on casual sports clothes instead of coats and ties. Some people put on blue jeans.
A couple of corrections :)
"...fewer cars on the highways, and"
"...day off on Friday to have a three day weekend."
"People don't wear the same clothes as they wear on weekdays"