| Opened | 1970 | Okazaki - Kitano-Masuzuka | Tracks | Single track | Okazaki - Naka-Okazaki | Tracks | Single track | Mikawa-Kamigō - Mikawa-Toyota |
| 1976 | Kitano-Masuzuka - Shin-Toyota | Double track | Naka-Okazaki - Kita-Okazaki | Double track | Mikawa-Toyota - Shin-Toyota | |||
| 1988 | Shin-Toyota - Kōzōji | Single track | Kita-Okazaki - Kitano-Masuzuka | Single track | Shin-Toyota - Setoshi | |||
| Double track | Kitano-Masuzuka - Mikawa-Kamigō | Double track | Setoshi - Kōzōji |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Okazaki | JR Central: Tōkaidō Hon (Atami - Maibara) | 0.0 | Okazaki-shi | Aichi |
| Map | Map | Naka-Okazaki | Meitetsu: Nagoya Hon [Okazaki-Kōenmae] | 3.4 | Okazaki-shi | |
| Map | Map | Kita-Okazaki | | 5.3 | Okazaki-shi | |
| Map | Map | Kitano-Masuzuka | | 8.7 | Okazaki-shi | |
| Map | Map | Mikawa-Kamigō | | 10.7 | Toyota-shi | |
| Map | Map | Mikawa-Toyota | | 15.9 | Toyota-shi | |
| Map | Map | Shin-Uwagoromo | Meitetsu: Mikawa [Uwagoromo] | 17.6 | Toyota-shi | |
| Map | Map | Shin-Toyota | Meitetsu: Mikawa [Toyota-shi] | 19.5 | Toyota-shi | |
| Map | Map | Yakusa | Aichi Kōsoku: Tōbu Kyūryō (Linimo) | 31.9 | Toyota-shi | |
| Map | Map | Setoguchi | | 36.7 | Seto-shi | |
| Map | Map | Seto-shi | Meitetsu: Seto [Shin-Seto] | 39.1 | Seto-shi | |
| Map | Map | Kōzōji | JR Central: Chūō Hon (West) | 45.3 | Kasugai-shi |
| Type | Origin - Major stops - Destination | Trains per day | Daytime frequency | Fastest train | Average speed |
|---|---|---|---|---|---|
| Local Futsū 普通 | Okazaki - Kōzōji - JR Chūō Hon line - Nagoya | 5 | 1h36 | 43 km/h | |
| Okazaki - Kōzōji | 43 | Every 20 min | 1h01 | 45 km/h | |
| Okazaki - Setoguchi | 1 | 57 min | 39 km/h | ||
| Okazaki - Shin-Toyota | 1 | 26 min | 45 km/h | ||
| Okazaki - Kitano-Masuzuka | 10 | 11 min | 47 km/h | ||
| Kitani-Masuzuka - Kōzōji | 9 | 46 min | 48 km/h | ||
| Mikawa-Toyota - Shin-Toyota | 7 | 4 min | 54 km/h | ||
| Setoguchi - Kōzōji - JR Chūō Hon line - Nagoya | 2 | 43 min | 45 km/h | ||
| Setoguchi - Kōzōji | 2 | 9 min | 57 km/h |
