How to express "two-way four lanes" and "two-way two lanes" in English? thank you

There are some differences between English expression and China expression. English expression focuses on whether to separate, such as two-way four lanes, English expression of four lanes and two lanes, in which dual emphasizes that there is a central isolation belt to separate the two roads. According to the custom of China people, it should be four lanes and two lanes, but it is suggested to use four lanes and two lanes, which is in line with the custom of English-speaking countries and they can understand it, and both lanes and four lanes are available in China.

Two-way two-lane can be translated into two-lane two-way