Modelling pedestrian interaction with perceptibly vibrating footbridges

This is the final version. Available on open access from the publisher via the link in this recordTo evaluate the vibration serviceability of footbridge structures most structural engineers use pedestrian force models that are defined for walking on rigid surfaces. This approach is no longer applicable for slender, light-weight and low-frequency structures that are prone to perceptible vibrations under walking excitation. To overcome this issue, it is necessary to understand the pedestrian walking locomotion and how the locomotion process interacts with the vibrating structure. This paper compares three approaches for modelling pedestrian walking over lively structures, and it critically evaluates their suitability for modelling the feedback mechanism between the structure and the pedestrian. The models are evaluated with respect to their capability to reproduce human-like motion as well as to replicate the vibration patterns observed on lively bridges. It has been shown that models used in biomechanics are good candidates for applications in the structural engineering context. © Faculty of Mechanical Engineering, Belgrade.Engineering and Physical Sciences Research Council (EPSRC)University of Warwic

driver pedestrian interaction under different road environments

Abstract The objective of the present study was to analyze the drivers' behavior while approaching pedestrian crossings under different driver – pedestrian interaction conditions and to assess the effectiveness of Advanced Driving Assistance Systems (ADASs) for pedestrian detection among several road environments. Three different road environments were implemented in a fixed-base driving simulator: urban road, sub – urban road and rural road. Several driver – pedestrian interactions were implemented in addition to the pedestrian absence condition. The simulated ADAS provided a visual – auditive message. Forty – five participants drove the three road environments scenarios in which three pedestrian crossroads were implemented (pedestrian absence, pedestrian presence with ADAS and pedestrian presence without ADAS). Overall, 369 driver speed profiles were plotted from 150 m before each pedestrian crossroad. ADAS affected the driver behavior in the interaction conditions with Time-To-Zebraarrive 6 s). The effect of ADAS among the road environments was similar for the urban and sub – urban road, resulting in a less abrupt braking maneuver that began in advance compared to that adopted in ADAS absence condition. For the rural road, the main effect was the reaching of a lower minimum speed near the pedestrian crossing and an advanced end of braking maneuver, highlighting the ability of the driver to complete a safer and effective yielding maneuver

Driver-pedestrian interaction under legal and illegal pedestrian crossings

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Calibration and Validation of A Shared space Model: A Case Study

Shared space is an innovative streetscape design that seeks minimum separation between vehicle traffic and pedestrians. Urban design is moving toward space sharing as a means of increasing the community texture of street surroundings. Its unique features aim to balance priorities and allow cars and pedestrians to coexist harmoniously without the need to dictate behavior. There is, however, a need for a simulation tool to model future shared space schemes and to help judge whether they might represent suitable alternatives to traditional street layouts. This paper builds on the authors’ previously published work in which a shared space microscopic mixed traffic model based on the social force model (SFM) was presented, calibrated, and evaluated with data from the shared space link typology of New Road in Brighton, United Kingdom. Here, the goal is to explore the transferability of the authors’ model to a similar shared space typology and investigate the effect of flow and ratio of traffic modes. Data recorded from the shared space scheme of Exhibition Road, London, were collected and analyzed. The flow and speed of cars and segregation between pedestrians and cars are greater on Exhibition Road than on New Road. The rule-based SFM for shared space modeling is calibrated and validated with the real data. On the basis of the results, it can be concluded that shared space schemes are context dependent and that factors such as the infrastructural design of the environment and the flow and speed of pedestrians and vehicles affect the willingness to share space

Impact of Vehicle Pedestrian Interaction on Traffic Flow: Midblock and Intersections

Several studies are there to understand the pedestrian movement and all the studies are based on fundamental diagrams only. These studies construct a base to characterize pedestrian flow. Several experiments have conducted to understand the pedestrian flow, likewise some field observations have done to represent fundamental diagrams. Therefore, before going to analyze the data from the observation, it is necessary to note down the pedestrian flow parameters carefully. The aim of the paper is to build up the base to fundamental diagrams and for characterization of pedestrian. And derive the required flow diagrams and results from the field observations. Field survey is conducted to know the vehicle pedestrian interaction, and this field data with respect to pedestrian crossing at signalized, Unsignalized or at midblock sections is aimed to be observed. And the impact of vehicle pedestrian interaction at several intersections/midblock sections is to be studied. To do this, several places are chosen from Rourkela. It is aimed to observing whether the pedestrian fundamental diagram is different in alternate locations or not. In this study it is found that fundamental diagrams are different in different locations of Rourkel