This is the border between Romania and Moldova, close to Chişinau, the capital of Moldova. This border is the one you're likely to cross when heading from Braşov to Chişinau, and vice versa. Be mindful that the guards can prevent you from crossing it on foot. It's best to get a ride in a small vehicle, manned by only a driver. Avoid transport buses with people and belongings in it, as it is likely their crossing time will be long and thorough (immigrants, smuggling, etc.). You're also allowed to switch vehicles when at the border area, just be sure you let a guard know beforehand.