追突

1. Origins, structure, and basic meaning

• Structure: 追突 is read as ついとつ and is a noun and する verb for one vehicle or train running into another object from behind.
• Basic usage: Rear-ending a stopped car appears in 停車した車に追突する, while model trains colliding from behind appears in 模型の列車同士が追突する.

2. Common pitfalls and similar expressions

• Impact from behind
  • It is not any collision; the essential relation is that the moving object strikes the one ahead from behind.
• Difference from 衝突
  • Compared with collisions in general, including head-on or side impacts, this term specifies a rear-end direction.