Major traffic congestion points
| Route | Traffic jam point | Congestion measures | |
|---|---|---|---|
| E1 Tomei Expwy | YokohamaMachida IC ~ Ebina JCT Near Ayase-SIC (up and down lines) |
付加車線設置 | Under business (Partially in operation) |
| Atsugi IC ~ HadanoNakai IC Near HadanoNakai IC (Out-bound line) |
Shin-Tomei Expressway Shin-Shin-Gotemba IC -Isehara-Oyama IC construction | In business | |
| Nisshin JCT ~ Nagoya IC Near Nisshin BS (In-bound line) |
付加車線設置 | In business | |
| E1 Meishin Expwy | Ichinomiya IC ~ Ichinomiya JCT Near Ichinomiya viaduct (In-bound line) |
Securing 6 lanes within the existing width | In business |
| fastener merging | In operation | ||
| E20 ChuoExpwy | Takaido IC-Chofu IC Near Jindaiji bus stop (In-bound line) |
Provisional 3-lane operation | In operation |
| 付加車線設置 | In business | ||
| Near Mitaka bus stop Road alignment improvement |
In operation | ||
| Hachioji JCT-Sagamiko IC Near the small Buddha tunnel (In-bound line) |
付加車線設置 | In business | |
| Hachioji JCT-Sagamiko IC Near Sagamiko bus stop (Out-bound line) |
付加車線設置 | In business | |
| E23 Higashi-Meihan Expwy | Yokkaichi IC ~ Suzuka IC (up and down) | Provisional 3-lane operation | In operation |
| C4 Ken-o Expressway | Ebina JCT (outer loop) | Lamp section provisional 2 lane operation | In operation |
| Ebina JCT (inner circle) | Lamp section provisional 2 lane operation | In operation | |
| Hachioji JCT (outer loop) | Lamp section provisional 2 lane operation | In operation | |
| Hachioji JCT (inner circle) | Lamp section provisional 2 lane operation | In operation | |
| E85 Odawara-Atsugi Road | AtsugiNishi IC ~ Atsugi IC Near Atsugi IC (In-bound line) |
Tomei additional lane installation | In business |
As of September 2023
JCT: Junction, IC: Interchange, SA: Service area, PA: Parking area, TB: Main toll gate, BS: Bus stop, TN: Tunnel
