trip_id,start_time,end_time,headway_secs
01_01_downhill,10:00:00,15:30:00,20
01_01_uphill,10:00:00,15:30:00,20
01_02_downhill,10:00:00,15:30:00,20
01_02_uphill,10:00:00,15:30:00,20
02_01_downhill,10:00:00,16:00:00,20
02_01_uphill,10:00:00,16:00:00,20
02_02_downhill,10:00:00,16:00:00,20
02_02_uphill,10:00:00,16:00:00,20
03_01_downhill,10:00:00,17:00:00,20
03_01_uphill,10:00:00,17:00:00,20
03_02_downhill,10:00:00,17:00:00,20
03_02_uphill,10:00:00,17:00:00,20
04_01_downhill,10:00:00,18:00:00,20
04_01_uphill,10:00:00,18:00:00,20
04_02_downhill,10:00:00,18:00:00,20
04_02_uphill,10:00:00,18:00:00,20
05_downhill,10:00:00,19:00:00,20
05_uphill,10:00:00,19:00:00,20
