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Explanation:

Prior to 1967, the DOT (Department of Transportation) did not exist in its current form. However, there were predecessor agencies that performed similar functions at the federal level in the United States.

One notable predecessor was the Bureau of Public Roads (BPR), which was established in 1915 under the Department of Agriculture. The BPR was responsible for overseeing the development and maintenance of the nation's roadways and played a significant role in the expansion of the U.S. highway system.

In 1939, the BPR was transferred to the newly created Federal Works Agency (FWA), which consolidated various public works agencies under a single umbrella. The FWA was responsible for a wide range of infrastructure projects, including roads, buildings, and utilities.

It was not until 1966 that President Lyndon B. Johnson proposed the establishment of a Department of Transportation. This proposal was enacted by Congress, and on April 1, 1967, the Department of Transportation was officially created, bringing together several federal agencies, including the Bureau of Public Roads, the Coast Guard, the Federal Aviation Agency, and others, to oversee various aspects of transportation on a national level.