关键词: 出行特征；私家车；出行强度；时间分布；结构方程；卡方检验

Abstract: With the rapid increase of car ownership, urban traffic congestion and environmental pollution problems are becoming increasingly serious. At the same time, with the relaxation of household registration restrictions, the number of urban people has increased significantly, and the traffic problem has become more serious. This paper takes private cars in Xi'an, Shaanxi Province as the research object, and studies the distribution characteristics of intensity of private car travel and travel time in this typical city in China. A suitable structural equation model is established for intensity of travel affected by different drivers' personal attributes, and the influence of personal attributes on travel intensity is analyzed. Then, the chi-square test is carried out on the travel time affected by different driver attributes, and the attributes that have obvious influence on the travel characteristics are screened out, and then the data is visualized and the influence of these attributes on the travel characteristics is analyzed, and finally the management suggestions are put forward based on the analysis results. The analysis results showed that age and occupation showed a significant positive correlation on the travel intensity, and the education level showed a significant negative correlation on travel intensity. The travel characteristics of private cars on weekdays and weekends are significantly different; At the same time, age, occupation, and the education level are the main factors affecting the characteristics of travel time of private car.

Key words: Travel characteristics; Private car; Travel intensity; Time distribution; Structural equation; Chi-square