| A Line | |
| Titlecolor: | white |
| Box Width: | 250 |
| System: | RapidRide |
| Operator: | King County Metro |
| Garage: | South Base |
| Vehicle: | New Flyer articulated buses[1] |
| Open: | October 2, 2010 |
| Predecessors: | Route 174 |
| Routes: | --> |
| Locale: | King County |
| Start: | Tukwila International Boulevard station |
| Via: | Pacific Highway South (SR 99) |
| End: | Federal Way Transit Center |
| Length: | 11miles |
| Frequency: | Peak: 10 minutes Off-peak: 15 minutes Late night: 30-70 minutes |
| Alt Frequency: | 15 minutes (most times) |
| Time: | 44 minutes |
| Day: | 24 hours |
| Ridership: | 10,100 (weekday average, spring 2015)[2] |
| Timetable Link: | A Line timetable |
| Map Link: | A Line map |
| Map State: | show |
| Map Name: | Route diagram |
| Next Line: | B Line |
The A Line is one of seven RapidRide lines (routes with some bus rapid transit features) operated by King County Metro in King County, Washington. The A Line began service on October 2, 2010,[3] running from Tukwila to Federal Way, mostly along Pacific Highway South. The northern terminus is Tukwila/International Boulevard Station. From there, riders can transfer to Sound Transit's Link light rail, the RapidRide F Line, or to other King County Metro buses that serve Burien, Tukwila, SeaTac, Georgetown, SoDo, and downtown Seattle. Its southern terminus is Federal Way Transit Center[4] and connects riders to buses serving Tacoma, Pierce County, and Auburn. Between the termini there are a total of 13 stations plus 13 intermediate stops.[5]
This corridor was previously served by King County Metro route 174[6] which carried an average of 5,570 riders on weekdays during the last month in service.[7] Since the implementation of RapidRide on the corridor, ridership has grown 81 percent and the A Line served an average of 10,100 riders on weekdays in spring 2015.
| 4:15 am – 4:45 am | 15 | 30 | |
| 4:45 am – 7:00 am | 15 | 15 | |
| 7:00 am – 9:00 am | 10 | 15 | |
| 9:00 am – 2:00 pm | 15 | 15 | |
| 2:00 pm – 6:00 pm | 10 | 15 | |
| 6:00 pm – 10:00 pm | 15 | 15 | |
| 10:00 pm – 4:15 am | 30-70 | 30-70 |
Between 10:00 pm and 4:15 am, service operates on a schedule; all other times are estimated headways.