ACR ASSIGNED VISUAL APCH HAS TCASII RA. CLBS AS INDICATED.

Narrative

INBOUND TO LGA AFTER MIDNIGHT; VISIBILITY WAS 40 PLUS. USED NANCI; PROUD ARR; BRIEFED FOR LDA-A TO RWY 22. ATC ASKED IF I WANTED RIVER VISUAL TO RWY 13. I ACCEPTED; BECAUSE I WAS FAMILIAR AND A COST SAVINGS. REBRIEFED; RESET RWY IN FMS FOR RWY 13. CLRED FOR RIVER. TFC WAS MENTIONED AT THIS TIME; BUT NOT AS A FACTOR; FOLLOWING TFC; REF TFC WAS NOT SAID. FAILED TO PICK UP THOUGH TFC WAS GOING OUR WAY. TFC SPD NOT SAID. IN RETROSPECT; WE WERE OVER TFC AS WE PROCEEDED UP RIVER. WE SLOWED AND PUT OUT DRAG. OUR ATTN WAS GREATLY FOCUSED ON SPD CTL AND TURN ON; BECAUSE IT IS SO EASY TO BE HIGH AND FAST. AFTER ILS INTERCEPT; AND GEAR DOWN; TCASII RA COMMANDED CLB 1500 PLUS. FO INITIATED CLB; RA WAS RESOLVED. APPARENTLY; TFC HAD TURNED UNDERNEATH US ALSO. WE WERE TOO HIGH TO LAND; SO FLEW OVER ARPT AND CIRCLED TO RWY 22. 1) ATC DID NOT EMPHASIZE TFC; SPD; DIRECTION; INTENTIONS. DID NOT SAY FOLLOW. 2) I WOULD NEVER ACCEPT THIS SITUATION AGAIN. 3) WORKLOAD; POSSIBLY FATIGUE; WAS FACTOR. END OF 3 DAY. ACTUAL FLYING TIME AT 8 HRS. 4) WILL NOT ACCEPT LENGTHY VISUAL APCHS.