This Friday the usual end-of-the-week refrain, “Have a nice weekend,” is being supplemented with the question, “What are you doing for the holiday?” For many, the answer involves going someplace else — to visit relatives, fishing, up north. For others, it’s a weekend when visitors come here. Either way, it means lots of families on the road and requires drivers to be particularly vigilant.

There is no sadder ending to a holiday weekend than a car accident that leaves people injured or dead. But every three-day holiday seems to bring more than its share of tragedies.

There may be no cure for a situation when an extraordinary number of people are all traveling the highways on Friday night and then again on Monday afternoon and evening. But there are a few measures that at least reduce the risk: Don’t drink and drive — not a drop. Don’t push the edge of exhaustion. Don’t text and drive. Use seatbelts. Above, all watch out for the drivers who are breaking those rules, because they are deadly dangerous.

Virtually every accident is caused by string of bad decisions. Let’s all do our part to break the chain that leads to tragedy.