Wangtu Xu Shiwei He Rui Song Yu Guo Leilei Quan Road Occupancy Rate Based Fuzzy Logic for Transit Signal Control at Freeway Ramp. 622-626 2008 FSKD (3) http://dx.doi.org/10.1109/FSKD.2008.463 conf/fskd/2008-3 db/conf/fskd/fskd2008-3.html#XuHSGQ08