Unitrans comes to a fork in the road next Wednesday when UC Davis undergraduates vote whether to expand, maintain or reduce bus services. The future of campus facilities for student athletic, recreational and cultural activities, likewise, could turn on balloting next week by undergraduate, graduate and professional students. The Unitrans measure on the Associated Students of UC Davis election ballot gives undergraduates two choices of raising their registration fees and keeping bus fares unchanged. A third option would keep per-quarter student fees the same but lead to a combination of increased fares and service cutbacks. The referendum, placed on the ballot by the ASUCD senate, is one of two ballot measures that would raise student fees. The other is a student initiative that would increase fees by $126 a quarter over a period of five years to finance about $65 million in athletic facilities and other campus improvements. Unitrans needs a cash infusion to keep pace with inflation and community growth, said Mark Champagne, director of ASUCD, which runs the bus service throughout Davis. In 1989, undergraduates voted to add $13 to their registration costs each quarter so that they could ride the buses for free. Other riders pay 50 cents. Over the past nine years, Champagne said, Unitrans has expanded to provide service to new neighborhoods as the city's borders have pushed outward. Ridership over the past decade has grown from 400,000 passengers a year to more than 2 million, he said. More than 80 percent of those riders are students. Ballot Measure No. 1 gives students three options. Students could raise their fees by $11.50 a quarter and expand services. Additional services would include: Free transfers to Yolobus lines to Woodland, Sacramento, West Sacramento and the Sacramento International Airport. Fifteen-minute frequency on Unitrans' D line to west Davis and W line to south Davis, which currently run every half-hour weekdays. Extending day service on all routes by an hour to 7 p.m. weekdays. Limited shuttle service from the Davis Amtrak station late afternoons and evenings on weekends. A second option would ask students to raise their fees by $6.50 a quarter to maintain current service levels without a fee increase. The third option would keep student fees unchanged and require Unitrans to raise fares and cut services. The facilities measure is backed by a coalition of undergraduate and graduate student leaders. Supporters turned in 1,652 valid signatures, well above the 1,500 needed to put the measure on Wednesday's ballot, said Raymond Shiu, ASUCD election committee chair. Graduate and professional students are also voting on the facilities measure, but by mail. Their ballots were sent out this week and last, said Janet Gong, assistant vice chancellor for student affairs. The measure -- titled Facility and Campus Enhancements -- would raise students' per-quarter fees by $5 in fall 1999, by an additional $6 beginning fall 2000 and by $115 more in 2003-2004 after the biggest projects are completed. Among new facilities to be built, the money would be used for: A $45 million activities and recreation center to complement Rec Hall; A $20 million multi-use stadium, with about one-third of the construction cost to be raised from other campus sources; Partial funding for a $5 million aquatics center, which has already received a $1 million private donation; and About $2 million in improvements to the Equestrian Center, including construction of a covered arena. The increased student fee would also enable the campus to open a student recruitment and retention center, expand sports clubs and buy new fitness equipment for Recreation Hall. In what may be a first in the UC system, the measure also would provide at least $1.5 million a year in financial aid to offset the fee increase for about 5,000 students with the greatest need.