Abstract

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Title:: Sampling of motor vehicles origindestination (OD) survey along highway based on 01 distribution

Author(s):: ZHANG Fengyan¹; ²; ZHOU Wei³; WANG Yuanqing¹; BAI Qiang¹; 1. School of Highway, Changan University, Xian 710064, Shaanxi, China; 2. Department of Civil Engineering，Anhui Communications Vocational and Technical College, Hefei 230051, Auhui, China; 3. Research Institute of Highway Ministry of Transport, Beijing 100088, China

Keywords:: traffic engineering; traffic volume; OD survey; sampling method; sampling rate; 01 distribution

Abstract:: Through abstracting the single spots OD survey into 01 distribution, the relation between the demanded precision and sampling rate of single survey spot and characteristic of OD value through this spots section is analyzed. The way to ascertain the single survey spots sampling rate in the condition of simple random sample is researched, the recommended values of OD surveys sampling rate in certain precision need are offered, and the sampling efficiencies of different sampling methods are compared. The results show that: the sampling rate would be higher while the traffic volume get down, the sample size would be increased when the traffic volume is higher; but when the traffic volume is high enough, the sample size will be constant, the sample size would be bigger while the desired confidence level, the precision level and the sample rate are higher; the proportion of the volume from a pair OD spots is bigger, the sample size satisfied with the distribution is less; through comparing the efficiency of four sampling methods, the efficiency of delaminating sampling is the highest and the efficiency of whole sampling is the lowest among the vehicle brand sampling, the isometric sampling, the delaminating sampling and the whole sampling. 5 tabs, 2 figs, 10 refs.