R 510/900
R 510/900 is a commuter/regional rail service operating between Wiener Neustadt and Bernhardsthal with extended service to Břeclav in the Czech Republic. R 510 and R 900 are two separate services that run interchangeably allowing direct service between the two points. The service is operated by the Austrian Federal Railways in cooperation with VOR. R 510 begins at Wiener Neustadt Hauptbahnhof in the south and travels to Vienna along the Southern Railway, the busiest railway in Austria. North of Vienna, most trains switch to the R 900 route. R 900 service uses the Northern Railway to Bernhardsthal and Břeclav.
Service
R 510 offers 24 trains daily between Vienna and Wiener Neustadt. 10 of these trains continue on to Bernhardsthal while 2 continue all the way to Břeclav. Trains operate between 4:50 and 22:40.R 500 operates trains further southwest to Payerbach-Reichenau using the same route. The combined R500 and R 510 service operates half-hourly service between Vienna and Wiener Neustadt. R 510 trains operate as expresses, between the two cities, making limited stops whereas local service is offered by the S1 and S2 of the Vienna S-Bahn.
R 510 route ends at Wien Floridsdorf in Northern Vienna and R 900 route begins. Some R 510 trains end at Floridsdorf and head back to Wiener Neustadt while others continue to Bernhardsthal and some continue to Retz. There are two daily R 510/900 trains operating directly between Wiener Neustadt and Břeclav, however all other service between the two cities is offered by R 500/900 service.
R 900 offers 13 trains daily between Bernhardsthal and Vienna along with 3 trains from Břeclav.Trains operate between 4:30 and 20:33. R 510/900 operates express service between Vienna and Gänserndorf, while S1 of the Vienna S-Bahn operates local service. After Gänserndorf, trains make all stops to Bernhardsthal/Břeclav.