Arterial Travel Time and Delay Study is done by the County’s professional traffic engineering consultant. They monitor traffic volumes and travel speeds of U.S. 1 and on each of the 24 study segments on U.S. 1. This review has been conducted annually since 1992 and every two years since 2013.

The 2023 draft study indicates that the overall LOS for the entire length of U.S. One has fallen from LOS C to LOS D.  There is no reserve capacity for additional trips.

No new permits?

This could mean that local governments may not permit new development, other than single-family homes, unless the proposed development’s traffic impact is mitigated. 

There are 23 traffic segments throughout the County.  Islamorada has the only segments under LOS C. Upper Matecumbe and Windley Key (LOS E) and Plantation Key (LOS D).  

Click here to see the chart. Click here to read more details on County website.

The Monroe County BOCC will discuss the 2023 draft study at the regularly scheduled Sept. 20, 2023, BOCC meeting.