Work Zone Safety under the and the right under this statement. A work zone is any type of road work that may impede traffic conditions.
Many work zones involve lane closures.
They may also be on the shoulder or in the median. Moving work zones such as sweepers or snowplows are also quite common. There are a number of events that make up a work zone. They can be long term projects or short term actions. A work zone can also exist at anytime of year.