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|---|---|---|---|---|
| 台4線 | ||||
 | ||||
| Route information | ||||
| Maintained by Directorate General of Highways | ||||
| Length | 39.269 km[1] (24.401 mi) | |||
| Major junctions | ||||
| West end |  Prov 15 in Dayuan | |||
| East end |  Prov 3B in Longtan | |||
| Location | ||||
| Country | Taiwan | |||
| Highway system | ||||
| ||||
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Provincial Highway 4 (Chinese: 台4線) is a provincial highway that runs from Dayuan to Longtan in Taoyuan City.
- ^ "Provincial Highway Mileage Table". Directorate General of Highways. Retrieved 19 May 2014.