Cluster mailbox units, or CBUs, were first introduced by the United States Postal Service in 1967 as a method of central delivery to serve large buildings and, more infrequently, residential neighborhoods. Because the USPS carrier only has one stop to make at the CBU, this type of mail delivery and collection improves efficiency and provides security for the recipient’s mail.
Placement, Shape, and Color of Road Signs Ensure Smooth Traffic Flow for 284 million Vehicles in the United States
The United States is a car-focused culture, with more than 284 million vehicles operating on roads throughout the country in the last quarter of 2021, according to Statista. Despite the volume of autos and trucks on the road, drivers make it to their destination safely with the assistance of standardized traffic and street signs.
According to the U.S. Department of Transportation, there are over 4 million miles of public roads in the United States. And with 228.2 million licensed drivers in 2020 and increasing numbers each year, traffic signs and street signage are more critical than ever in helping drivers navigate roadways so they can reach their destination safely.