Taiyuan-safe transport facilities in Taiyuan, Shanxi Province Expressway Company Limited is a subsidiary of subordinates, mainly engaged in highway traffic safety signs and the use of the facilities.

• 太原市顺平安交通设施有限公司是山西省太原高速公路有限公司下属的子公司,主要经营高速公路使用的交通安全标志和设施。