About Us


Reliance Student Transportation, LLC (Reliance) was re-established in 2016 after finding its roots during the 1950’s, when Carl Caskey, a local farmer, began transporting students for the Southern York County School District. The Caskey family grew Reliance [Motor Coach Company, Inc.] to over 100 school buses and serviced York County school districts including Southern York, Spring Grove Area, West York Area and York Suburban.

In 1997, at the age of 33, John Polli purchased Reliance from the Caskey family. In the upcoming years, he was awarded several local school contracts which he continued to service until 2006, when he decided to sell Reliance to a national school bus contractor.

After watching safe, creative, courteous and reliable student transportation service to York County school districts fade over ten years, John decided to re-establish the Reliance brand and was ultimately awarded contracts for the Dallastown Area School District, York Suburban School District, West York Area School District, and the Central York School District.

Today, along with a team of local, experienced, York County-based transportation professionals, Reliance has grown to over 300 school bus and van routes, transporting over 20,000 students to-and-from school daily. It’s latest venture, RideShare, was test-piloted in 2023 with 2 vans and has quickly expanded to over 20 vans, with the expectation for strong demand to grow.

Our Mission

Our mission is to provide our York County, Pennsylvania school districts with safe, creative, courteous and reliable student transportation services using best in class drivers, equipment and technology while controlling cost which provide a profitable, sustained, long-term business.

Our People

Our people are our greatest assets. Recognizing the significant contributions that come from all levels of employees, from drivers to mechanics, to the administrative staff, the diversity of individuals and ideas, as a team, we have adapted to the competitive transportation environment with creativity and innovativeness.

We encourage open communication, the development of skills and increasing knowledge, dedication to excellence and of course teamwork.

The quality of the organization is characterized by the long tenure of many of our employees.

Safety is our #1 Priority

There is nothing more important at Reliance than the safety of our students, employees and the public. Reliance has a long history as one of the safest providers of student transportation services.

Going Green

Reliance has a commitment to environmental stewardship and sustainability. We continue to engage in projects to improve the environmental impact of our school buses and vans, as well as company facilities.