The R110B was part of the New Technology Test Program, which was launched to test out various new technology features that could be incorporated into subsequent subway car designs. Although the R110B only operated in revenue service for about seven years, many of the experimental features of the R110B (and the R110A, its A Division counterpart) have been included in the R143, R160, and R179 subway cars that have entered service during the 21st century. These features included automated announcements, electronic route signs and next stop indicators, passenger intercom, and AC traction motors.