We are among the many passengers who rely on the Princeton Branch Dinky train for daily commutes to or from work or school and who will be severely and adversely affected by New Jersey Transit's announced plans to shut down this train service for three or more months or beginning in October.  The provision of bus service to Princeton Junction on congested Alexander Road  is not a substitute for a four-minute train ride.  Many of us will end up driving our cars, at both personal expense and expense to the environment.  If service is in fact being shut down to free up Princeton Branch equipment in connection with the installation of safety technology, we urge New Jersey Transit to find alternative approaches.