| 信令 | xin4 ling4 | signaling (engineering) |
| 敌台 | di2 tai2 | look-out tower |
| 号旗 | hao4 qi2 | signaling flag |
| 号炮 | hao4 pao4 | signaling cannon fire |
| 号礮 | hao4 pao4 | signaling cannon fire |
| 螺号 | luo2 hao4 | conch |
| 阿芙乐尔号 | a1 fu2 le4 er3 hao2 | battle cruiser Avrora (Russian: dawn) firing the shot signaling the 1917 revolution, a favorite of communist iconography |
| 铁路信号 | tie3 lu4 xin4 hao4 | railroad signaling |