B737 Next Generation Undifferentiated
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 191; Flight Crew Type 191
Confusion
Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Taxiway
General None Reported / Taken
Airport
ATIS information Bravo current with visibility at 2.5 miles and ceiling broken at 600 ft; wet runway with rain. We were cleared 'line up and wait Runway 4R' following a departing aircraft with landing traffic on final. As soon as we stopped in position; Tower instructed us to exit the runway at Taxiway Victor for landing traffic de-confliction. Taxiway Victor; while marked on the airport diagram; is not marked on the airfield when approached from the Runway 4R Approach end. There is no sign. This caused confusion so we taxied past Victor to the Y2 Taxiway and exited the Runway. Due to rain; we could not see the Taxiway Y2 sign until we were past the unmarked Taxiway Victor. Taxi speed was appropriate for wet field conditions. ATC directed landing traffic to go-around. We were clear of the runway prior to the landing aircraft crossing the field boundary. We were subsequently cleared for takeoff.
B737 NG flight crew reported that poor visibility and lack of signage caused a taxiway incursion.