Riders of Niles Dial A Ride are being advised that the service will be closed Friday. Niles Dial A Ride announced on Thursday that due to staff training the agency would be unavailable. Niles Dial a Ride Transportation, or DART, has been serving the Niles and Buchanan areas since 1974. The service consists of demand response service and one deviated fixed route. Its headquarters also serves as a transfer point to Cass County and the Berrien Bus transit systems.