GARDEN CITY - A group of bus riders' advocates are hurling criticism at Nassau County's newly privatized bus system, NICE Bus. The Long Island Bus Riders' Union claims that Veolia Transportation, which took over Nassau's bus system on New Year's Eve, is violating the Americans with Disabilities Act. The group says the buses don?t provide audible announcements at bus stops for the visually handicapped or multilingual information about bus routes. A large number of the more than 100,000 riders are Spanish-speaking, and to not provide the information violates federal law, the group says.Veolia Transportation announced last week that it's facing a $7.3 million budget hole, and the company is slated to announce service cuts at a public meeting tomorrow. The riders' union is also calling on Veolia to avoid making service cuts or implementing fare increases.