Abstract
A new concept of Highway Node Acceptance Capacity (HNAC) is proposed in this paper inspired by a field data observation. To understand HNAC in microscopic view, boundary condition of successful merging is found using car-following behaviours and lane-changing rules, which could also explain traffic oscillations. In macroscopic view, linear positive relationship between HNAC and background traffic volume is obtained based on moving bottleneck. To determine the explicit form of the relationship, data simulation considering car-following behaviours and traffic flow theory is used. In the results, the synchronization phenomenon of oscillation in on-ramp (with respect to main road) and intersected road is found. The explicit equation of HNAC is determined based on standard deviation and correlation coefficient analysis, and also proved to be accurate with model validation, which is helpful in studies related to propagation mechanism of traffic emergencies on highway network.
Highlights
In our previous work [1], tra c ow eld data was collected on City Ring Road and Lianhuo Expressway, Xi’an
Taking northbound tra c merging from City Ring Road to Lianhuo Expressway as an example (Figure 1), tra c condition of this highway node varies between morning and a ernoon peak hours
When getting back to the calculation of Highway Node Acceptance Capacity (HNAC), the tra c volume escaped from queue region and entered the target lane should be taken into consideration
Summary
In our previous work [1], tra c ow eld data was collected on City Ring Road and Lianhuo Expressway, Xi’an. Taking northbound tra c merging from City Ring Road to Lianhuo Expressway as an example (Figure 1), tra c condition of this highway node varies between morning and a ernoon peak hours. (b) Tra c condition in Baqiao interchange at 16:00 p.m. practical e orts could be done, including microscopic relationship among vehicles and tra c ow’s physical characteristics in merging area, e.g. us, to further ameliorate Daganzo’s classic work, concept of Highway Node Acceptance Capacity (HNAC) is provided here.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
