Won’t you give my boy a chance to get home?

Don't Travel - unless your travel helps with the war
U.S. Office of Defense Transportation, U.S. Government Printing Office, 1944
Artist: Jerome Rozen
In 1942, rubber was one of the first items to be rationed, because the Japanese invasion of the Dutch East Indies had cut off rubber supplies. The government also rationed gasoline to reduce driving and thus the wear on rubber tires. Instead people were encouraged to carpool, take public transportation, or walk, and the speed limit was set to 35 mph. So that automobile factories could produce essential military vehicles and parts, new cars were not manufactured in America during the war years.