On the journey there is a toilet in the car saying that parking is forbidden to use what s going on

There are no toilets in the coaches. After driving for 3 hours, the driver will take a break in the motorway service area, during which he can get out of the car and go to the toilet. Coaches must stop between 2 and 5 a.m., or the driver must rest on the ground. >>>More

<> Beijing-Tianjin Intercity Railway, also known as Beijing-Tianjin Intercity Rail Transit, is an intercity passenger dedicated line connecting Beijing and Tianjin, and is also an important part of the intercity rail transit network in the Bohai Rim region in China's "Medium and Long-term Railway Network Planning". The line is the first high-standard high-speed railway with a design speed of 350 kilometers per hour in Chinese mainland, and the first intercity passenger transport system to be put into operation in the "Medium and Long-term Railway Network Plan". In January 2013, the Beijing-Tianjin intercity railway project won the first prize of the National Science and Technology Progress Award. >>>More

Long-distance sleeper cars must have toilets, and they are equipped with toilets on board.

Generally, long-distance air-conditioned cars have toilets, but they are rarely used. Now the basic long-distance bus is running on the highway, and the driver generally asks you to go to the toilet in the high-speed service area. . .

Just tell him if the seat is yours or not.