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

KP-LAB Knowledge Practices Laboratory -- External release of end-user applications

deliverablesThis deliverable describes the M24 release of the End user applications for knowledge practices software v2.0.0. The deliverable includes the technical development performed until M24 (January 2008) within WP6 according to Description of Work 2.1 and D6.4 M21 specification of end-user applications. The current release is comprised of two set of tools: 1. Shared Space Tool The shared space and the accompanying support material can be found on the Internet at: http://2d.mobile.evtek.fi:8080/shared-space 2. Map-It. The installer program for Map-It v2.0.0 is available at: http://www.kp-lab.org/intranet/testable-tools/kp-lab-tools/map-it/map-it-2-0.0 Please consult the "Getting Started" Note before installing and using Map-It: http://www.kp-lab.org/intranet/testable-tools/kp-lab-tools/map-it/getting-started-with-map-it 3. Change Laboratory tools The release targeted for the end users participating in the trials planned to be conducted in the CL Working Knot can be accessed via the following link: http://2d.mobile.evtek.fi:8080/shared-space/cl.html Anyone who wishes to try the software out but is not participating in the Change Laboratory trials should use the development deployment on: http://mielikki.mobile.evtek.fi/shared-space/cl.html The M24 release of Semantic Multimedia Annotation tools is still delayed. The release of CASS Memo Client has been postponed to be included in the M28 release in DoW3

Modelling shared space users via rule-based social force model

The promotion of space sharing in order to raise the quality of community living and safety of street surroundings is increasingly accepted feature of modern urban design. In this context, the development of a shared space simulation tool is essential in helping determine whether particular shared space schemes are suitable alternatives to traditional street layouts. A simulation tool that enables urban designers to visualise pedestrians and cars trajectories, extract flow and density relation in a new shared space design and achieve solutions for optimal design features before implementation. This paper presents a three-layered microscopic mathematical model which is capable of representing the behaviour of pedestrians and vehicles in shared space layouts and it is implemented in a traffic simulation tool. The top layer calculates route maps based on static obstacles in the environment. It plans the shortest path towards agents' respective destinations by generating one or more intermediate targets. In the second layer, the Social Force Model (SFM) is modified and extended for mixed traffic to produce feasible trajectories. Since vehicle movements are not as flexible as pedestrian movements, velocity angle constraints are included for vehicles. The conflicts described in the third layer are resolved by rule-based constraints for shared space users. An optimisation algorithm is applied to determine the interaction parameters of the force-based model for shared space users using empirical data. This new three-layer microscopic model can be used to simulate shared space environments and assess, for example, new street designs

A Shared Space

Where it divides Arizona and Sonora, the international boundary between Mexico and the United States is both a political reality, literally expressed by a fence, and, to a considerable degree, a cultural illusion. Mexican, Anglo, and Native American cultures straddle the fence; people of various ethnic backgrounds move back and forth across the artificial divide, despite increasing obstacles to free movement. On either side is found a complex cultural mix of ethnic, religious, and occupational groups. In A Shared Space James Griffith examines many of the distinctive folk expressions of this varied cultural region.https://digitalcommons.usu.edu/usupress_pubs/1067/thumbnail.jp

Los espacios compartidos ("Shared space")

El concepto de Espacio Compartido, traducción literal de "Shared Space", nace formalmente con la puesta en marcha del proyecto europeo así titulado, que forma parte del programa IIIB, del Mar del Norte. "Shared Space" se inició en 2004 y su duración como proyecto financiado en parte por la Unión Europea finalizará en 2008, tras haber promovido siete proyectos piloto en Alemania, Bélgica, Dinamarca, Holanda e Inglaterra. Sin embargo, "Shared Space" no es sino una nueva denominación para una técnica con décadas de historia, desarrollada fundamentalmente en Holanda y que puso en práctica nuevos criterios para la regulación del tráfico y el diseño del espacio público, basados en la eliminación de toda señalización reguladora, en resaltar el contexto urbano del espacio vial y en la coexistencia e integración espacial de los diferentes usuarios. Analizar la experiencia existente de construcción y funcionamiento de espacios compartidos y evaluar la posibilidad de aplicar sus criterios a algunas de las calles o áreas de los centros de las ciudades españolas es el objeto del trabajo que se presenta a continuación