Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: This includes all natural and human accidents and errors and is calculated over roughly 160,000 Shinkansen trips completed.

This includes all natural and human errors. It is calculated over roughly 160,000 Shinkansen trips completed.