The Utah Transit Authority (UTA) implemented a Connection Protection
(CP) system to improve the reliability of transfers from the higher
frequency light rail TRAX trains to the lower frequency bus services.
The CP system examines the status of TRAX trains and issues a "hold at
{station name} until {time}" message to buses waiting at the connecting
rail stations via the bus' onboard Mobile Data Terminal (MDT), if the
lateness of train is within a pre-determined threshold (e.g., three
minutes). The system was completed and tested in January 2002 prior to
the Winter Olympic Games in Salt Lake City. The successful
implementation and operation of the CP system has received attention
from the Federal Transit Administration (FTA) and the U.S. Department of
Transportation (USDOT) Intelligent Transportation System (ITS) Joint
Program Office (JPO) to warrant a national evaluation study.