Narrative:

While exiting H9 high speed exit from runway 25L; per tower's instructions; I had to brake aggressively when I noticed an aircraft taxiing westbound on taxiway H; turning onto taxiway T.traffic on taxiway H was not disclosed to us; and I did not see him until I took the high speed; as directed; and noticed him approaching from my right side. Unaware of his intentions; and sensing a potential conflict; I braked aggressively to avoid a potential threat.tower should have instructed that aircraft to hold short of that intersection until we had finished exiting the high-speed; as we should have had priority. Alternatively; he should have advised us to continue on runway to next exit.in my discussion with tower supervisor; after block-in; he said he didn't interpret ball note 2 to be in conflict with what they did. He also implied that it didn't appear to have been a problem.

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Original NASA ASRS Text

Title: A321 Captain reported having brake aggressively to avoid a collision on a taxiway at LAX.

Narrative: While exiting H9 high speed exit from Runway 25L; per Tower's instructions; I had to brake aggressively when I noticed an aircraft taxiing westbound on Taxiway H; turning onto Taxiway T.Traffic on Taxiway H was not disclosed to us; and I did not see him until I took the high speed; as directed; and noticed him approaching from my right side. Unaware of his intentions; and sensing a potential conflict; I braked aggressively to avoid a potential threat.Tower should have instructed that aircraft to hold short of that intersection until we had finished exiting the high-speed; as we should have had priority. Alternatively; he should have advised us to continue on runway to next exit.In my discussion with Tower Supervisor; after block-in; he said he didn't interpret Ball Note 2 to be in conflict with what they did. He also implied that it didn't appear to have been a problem.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.