a new bus route open city the route close polygon line place segment parallel axis m bus operate route all bus loop route direction equal constant velocity stop time negligible problembuse start movement vertex route equal interval suppose t total time single bus travel loop route then bus 1 start move time 0 bus 2 start time tm bus 3 start time 2Tm finally bus m start move time m1tm thus interval pair consecutive bus include interval bus equalbuse communicate wireless transmitter equal power if transmitter power d bus distance d communicatethe bus equip distribute system schedule track for bus stick schedule system synchronize necessary datum bus time time at moment synchronization bus 1 communicates bus 2 bus 2 bus 3 bus m communicates bus 1As research employee task find small value d possible find time moment perform synchronization bus start move