The #CrossBorderRail line is right next to a road, about here https://www.google.com/maps/place/Ingling+69,+4784,+Austria/@48.5631921,13.4491426,17z/data=!3m1!4b1!4m15!1m8!3m7!1s0x4774587943a0a065:0x41d25a40937af30!2sPassau!3b1!8m2!3d48.5667364!4d13.4319466!16zL20vMDFoNXRk!3m5!1s0x477458b081aaf629:0x97946435feab64c1!8m2!3d48.5631921!4d13.4517229!16s%2Fg%2F11g62njk78?entry=ttu&g_ep=EgoyMDI1MDkyMi4wIKXMDSoASAFQAw%3D%3D
So I should be able to check if cars are being checked there out of the train window