Mobility effects of b2c and c2c e-commerce in the Netherlands: a quantitative assessment

For more than a decade researchers have been interested in the implications of e-commerce for personal travel and freight transport. So far it is mostly the mobility effects of business-to-consumer (b2c) e-commerce that have been studied. However, consumer-to-consumer (c2c) e-commerce is becoming popular and may have important implications for mobility as well. Moreover, most studies conducted thus far have looked at the consequences of b2c e-commerce for either personal or freight travel, but not for both.This paper takes a more comprehensive approach. Using a nationwide sample of 3000 Dutch e-shoppers we calculated the potential impacts of both types of e-commerce on personal and freight travel. The results indicated that personal travel in the Netherlands has only marginally decreased as a result of e-shopping, while freight transport has slightly increased. The outcomes showed a net mobility effect, as the reduction in personal travel was not fully compensated by the increase in freight transport. However, this mobility reduction was fully attributed to b2c e-commerce, as c2c e-commerce led to an increase in both personal travel and freight transport.     

Exploring heterogeneity in travel time expenditure of aging populations in the Netherlands: results of a CHAID analysis

The aim of this paper is to contribute to the increasing literature on travel behavior and time use of the elderly. The Dutch National Travel Survey, administered in 2009, was used as a data source. First, various facets of activity-travel patterns of the elderly were compared against overall sample averages. Results indicate that the new generation of elderly people do not differ that much from other age groups in terms of their activity-travel behavior. Differences in behavior can be largely understood in terms of constraints acting on agendas. Moreover, travel patterns of elderly are affected by socio-demographic variables. Second, to further qualify the average findings, the Chi-square automatic interaction detection (CHAID) method was applied to explore heterogeneity among the elderly in terms of travel time expenditure. It is analyzed how differences in travel time co-vary with socio-demographics, in addition to activity type, activity duration and travel aspects. The results suggest that the aging population can be systematically broken down into several homogeneous cohort segments. Travel time of elderly groups depends significantly on transport modes, travel motivation, and seven socio-demographic variables (gender, age, living environment, personal net-income, household size and season). Moreover, there is less heterogeneity in travel time of elderly who are older than 75 years old. However, for younger elderly people, especially the group aged from 65 to 74 years old, heterogeneity affects their travel.     

Excess kindergarten travel in Changchun,Northeast China: A measure of residence-kindergarten spatial mismatch

Home-kindergarten travel is an important urban travel activity. This paper firstly discussed the relationship between excess kindergarten travel and residence-kindergarten spatial mismatch. And then questionnaires and GIS are used to provide some baseline analyses of their distribution pattern both statistically and spatially in Changchun. Thirdly, we provide an exploratory analysis of the causes of excess kindergarten travel and spatial mismatch. Results indicate that a) kindergartens in Changchun are highly accessible if children attend their nearest kindergartens, b) however, there is numerous excess travel and high degree of spatial mismatch, nearly 87.1% of the kindergarteners travel excessively, c) the excess travel distances in inner city are much shorter than other areas, and the corresponding spatial mismatch degree is lower. Two critical factors influencing excess kindergarten travel and residence-kindergarten spatial mismatch are summarized. Firstly, the actual causes are a) parents' personal preferences and kindergarten choice tendencies, b) Danwei owned kindergartens generally with higher quality, tendentious enrollment policies, charge threshold, and c) the widespread use of private cars. Secondly, the root causes are limited public expenditure on kindergarten education and its unbalanced allocation, as well as Chinese traditional concept and prevailing way of parenting.     

Inter-regional and inter-temporal analysis of travel behaviour for Asian metropolitan cities: Case studies of Bangkok, Kuala Lumpur, Manila, and Nagoya

The unprecedented demand for travel experienced in Asia, in conjunction with the economic development of the1980s, has resulted in a number of detrimental effects on urban systems. Economic development has certainly intensified per capita income enhancing personal mobility. In Asia, private vehicle ownership and usage have continued to be recognised as an obligatory element of travel for many. Undoubtedly there is a direct relationship between vehicle ownership and public transport usage. Inter-regional and inter-temporal investigations of travel behaviour in Asian cities are therefore necessary to develop an understanding of the future transportation system including suitability and the role of public transport. Since travel data are scarce in Asian countries, inter-regional or inter-temporal travel behaviour investigations do not exist to date. Several travel demand models are developed using discrete choice modelling techniques and Bangkok, Kuala Lumpur, Manila, and Nagoya as case studies. Estimation results of the mode choice models are successfully incorporated to compare travel behaviour trends in selected cities in Asia. The developed models are tested for spatial and temporal transferability.     

Elasticities of demand for leisure air travel: A system modelling approach

In this study, the UK outbound demand for leisure air travel has been examined using a demand system which takes into account the ways in which the expenditure on air fares interacts with both the expenditure on non-fare components of travel abroad and with expenditure on domestic leisure. The findings suggest that there is a strong link between total consumer expenditure and expenditure on air travel with the expenditure elasticity greater than one but that, considered in aggregate, the demand for air travel is moderately inelastic with respect to air fares alone. However, the findings also show that interactions between air travel expenditure, other costs of travel abroad, as well as expenditure on leisure activities in the UK, involve sizeable cross-price elasticities.     

For the young and old alike – An analysis of the determinants of seniors’ satisfaction with the true door-to-door DRT system EcoBus in rural Germany

Mobility and transportation service requirements change with growing age. Also in a car-based society like Germany many seniors need to give up driving the car and are dependent on relatives or public transport. Especially in rural areas, the accessibility of public transport is often limited. Demand responsive transportation has occasionally been proposed by researchers as a viable alternative to stop-, route- and time-based public transportation to address such problems. This case study analyses passenger data from the true DRT system EcoBus to identify distinct drivers of old passengers’ satisfaction compared to other passengers. Contrary to existing literature, older people stated to be even more satisfied with the service then younger travellers did. Moreover, older travellers tend to travel alone, but showed slightly higher satisfaction when travelling in groups. The results suggest that older people might be more open-minded and positive regarding flexible public transport schemes than expected.     

The path and time efficiency of residents' trips of different purposes with different travel modes: An empirical study in Guangzhou,China

Improving residents' travel efficiency and reducing carbon emissions from travel are the key issues for sustainable development of urban transportation. This study first employed a circuity index to measure the path efficiency of residents' trips based on 2015 survey data in Guangzhou and developed a generalized additive model (GAM) to investigate the relationship between the path efficiency and travel distance for different purposes of trip and different travel modes. On this basis, it further evaluated the time efficiency of different travel modes for each trip. The results showed that there is a complex and nonlinear relationship between the path efficiency and travel distance, which differs between different purposes of trips and different travel modes. In general, trips by non-motorized transport have a lower circuity index and higher path efficiency than those by cars or public transport. Moreover, non-motorized transport is the time-efficiency optimal mode for almost half of the trips, especially for daily shopping trips. However, people prefer to choose public transport on their trips even though public transport is not the time-efficiency optimal mode for these trips. Generally, only about half of the residents chose the time-efficiency optimal mode for their trips. Those who did not choose the time-efficiency optimal mode tended to choose the modes with higher carbon-intensity. The conclusions of this study indicate that for improving travel efficiency and reducing carbon emissions from transport, more efforts should be focused on the non-motorized travel environment and developing relevant policies to encourage more walking and cycling.     

Tourism and the smartphone app: capabilities,emerging practice and scope in the travel domain

Based on its advanced computing capabilities and ubiquity, the smartphone has rapidly been adopted as a tourism travel tool. With a growing number of users and a wide variety of applications emerging, the smartphone is fundamentally altering our current use and understanding of the transport network and tourism travel. Based on a review of smartphone apps, this article evaluates the current functionalities used in the domestic tourism travel domain and highlights where the next major developments lie. Then, at a more conceptual level, the article analyses how the smartphone mediates tourism travel and the role it might play in more collaborative and dynamic travel decisions to facilitate sustainable travel. Some emerging research challenges are discussed.     

Internet: investigating new technology's evolving role, nature and effects on transport

In the space of only a few years the Internet has emerged as a mainstream communications medium providing a growing proportion of the population with virtual access to goods, people, opportunities and services. Against a backdrop of highlighting how teleshopping and teleworking alongside traveller information services are advancing as a consequence of the Internet, this paper suggests that the Internet and the virtual mobility it affords must in due course be explicitly addressed within an integrated transport policy. The paper explores the relationships between use of information and communications technology and personal travel highlighting the importance of social issues in gauging whether or not a net positive effect in terms of travel demand and tripmaking can arise from increasing use of the Internet. Suggestions for a policy approach are also made.     

Dependence between travel distance,individual socioeconomic and health-related characteristics,and the choice of the travel mode: a cross-sectional study for Kaunas,Lithuania

The aim of this study was to analyse the associations between individual socioeconomic and health-related characteristics, travel distance, and the choice of different travel modes in urban population. A cross-sectional study included 932 adults of Kaunas city, Lithuania. The choice of the travel mode and individual characteristics were self-reported by the participants, and their travel routes were calculated using the geographic information system. Multivariate logistic regression was used to assess the most significant factors determining the choice of a car, cycling, walking, or public transport. In total, 529 participants reported using a car, of whom 65.8% had medium or high education levels. These participants were more likely to be younger, male, married, and employed. Among bicycle users, statistically significant differences between the employment status, body mass index, and travel distance were observed. Walkers were significantly more likely to be older, those with lower incomes, unemployed, and travelling the shortest distances. The analysis of the travel distance on the choice of the travel mode revealed that men travelled longer distances with a car compared to women. The employment status was significantly associated with travel distance by car or public transport. Employed individuals travelled longer distances by public transport or by car, compared to unemployed individuals. Among bicycle users, we found that people with higher levels of education and overweight individuals cycled the longest distances. Our study emphasizes the importance of considering different individual characteristics when analysing the choice of transport modes. It provides evidence that is relevant for all urban populations on the choice of the transport mode, particularly considering active versus passive transport.     

Safety and travel time in cost-benefit analysis: A sensitivity analysis for North Rhine-Westphalia

Decisions on large-scale infrastructure concepts are frequently based on cost benefit analysis (CBA). Using 431 road projects evaluated in the integrated transport planning process in North Rhine-Westphalia, Germany (IGVP NRW) this paper examines the evaluation dimensions traffic safety (fatalities) and travel time in private passenger transport. The unit values of traffic fatalities and travel time are varied, and the effects of the variations on the rank order of the projects are examined. Target conflicts between safety and travel time are studied as well as the contribution of these two dimensions to the total benefit values. The sensitivity analysis shows that the evaluation results are fairly stable against variations in unit values of travel time and fatalities. The relevance of traffic safety in terms of its contribution to total benefit as well as in terms of the unit value appears to be relatively minor. The unit value of travel time is higher than that of lifetime. Some projects turn out as feasible in the evaluation even though they are likely to increase the number of fatalities. The paper therefore suggests the higher weighting of traffic safety in CBA.     

Telecommuting and other trips: an English case study

This paper investigates the importance of non-work travel to the growing population of telecommuters and the implications of this for sustainable travel patterns. Previous research has identified a link between increased online access to work and reduced proximity between residential and workplace locations. These studies raise concerns that as more people split their work activities between home and external workplace, whilst living in more dispersed locations, more unsustainable transport impacts will be generated, including higher vehicle mileage, car dependency, and less physical activity. This paper counters that the implications of telecommuting and other flexible working practices for sustainable travel behaviours may be more dependent upon the number and type of non-work journeys and the accessibility of amenities for these purposes rather than on the distance to the workplace for less frequent commuting journeys. Using the National Travel Survey for England, the travel behaviours of those who identify themselves not as home workers but as working from home at least once a week are compared to other working adults by measuring and modelling the number and purpose of trips within a week's travel diary, independent of distance or mode. Telecommuters record fewer commute trips, more trips for other purposes, and the marginal utility of additional non-work trips to telecommuters is greater than for many other socio-economic characteristics. Thus, addressing the accessibility of non-work destinations proactively through local planning has the potential to optimise the sustainability benefits of telecommuting.     

“Cycling was never so easy!” An analysis of e-bike commuters' motives,travel behaviour and experiences using GPS-tracking and interviews

The market for electrically-assisted cycling is growing fast. When substituting motorized travel, it could play an important role in the development of sustainable transport systems. This study aimed to assess the potential of e-bikes for low-carbon commuting by analysing e-bike commuters' motives, travel behaviour and experiences. We GPS-tracked outdoor movements of 24 e-bike users in the Netherlands for two weeks and used their mapped travel behaviour as input for follow-up in-depth interviews. Most participants commuted by e-bike, alternated with car use. E-bike use was highest in work-related, single-destination journeys. It gave participants the benefits of conventional cycling over motorized transport (physical, outdoor activity) while mitigating relative disadvantages (longer travel time, increased effort). The positive experience of e-bike use explained the tolerance for longer trip durations compared to other modes of transportation. Participants were inclined to make detours in order to access more enjoyable routes. Results demonstrate that e-bikes can substitute motorized commuting modes on distances perceived to be too long to cover by regular bike, and stress the importance of positive experience in e-bike commuting. This provides impetus for future actions to encourage commuting by e-bike.     

Key research themes on ICT and sustainable urban mobility

Abstract

Information and communication technologies (ICTs) are hypothesized to replace or change the use of the transport system by facilitating new or different activities. This article offers a review of more than 40 years of research regarding the relationship between ICTs and urban mobility. We discuss the expectations for the changes in travel demand, travel patterns, and the urban form as a result of the development and introduction of ICTs. Much of the interest in the relationships between ICTs and mobility is premised on the expectation of substitution effects, but empirical findings often suggest more complex effects than direct substitution. Although research on single types of travel activity may sometimes indicate simple substitution effects, examination of the broader impacts may also reveal travel generation effects as well. As such, ICTs do not simply substitute mobility patterns but change them. A growing body of research focuses on changing mobility patterns (in terms of time and space), changes in the experience of travel and changes in the perceptions of travel costs due to the interaction between old and new technologies for overcoming distance. ICTs are gradually becoming embedded within the transport system, enabling flexibility, multitasking, and an increase in human activities.     

Sustainable transport challenges in a suburban university: The case of the Autonomous University of Barcelona

This paper provides detailed accounts of the transport patterns at the Autonomous University of Barcelona (UAB), including its motivations, barriers and user preferences, and explores the main transport challenges faced by the UAB campus. This suburban university is an important transport activity generator in the Barcelona Metropolitan Region, which is committed to achieving sustainable transportation. Results have been obtained through a personal survey (n=5525) of members of the university community. These show that the main limitations for changing travel mode from private means to non-motorised or public modes of transport are: the lack of adequate infrastructure, the marginal role of walking and cycling as a means of transport, and the longer time involved using public transport.     

A comparative evaluation of large-scale personal travel planning projects in England

Findings are presented from a study assessing the effectiveness of large-scale, residential-based personal travel planning (PTP) projects in eight areas in England. The project evaluation results show consistent reductions in car driver trips with an average reduction of 11%. The mode of travel that experiences the most substantial increase is walking with modest increases reported for cycling and public transport. Results have not been disaggregated according to the type of participation that individuals have had in projects; therefore, it is not possible to identify how project design influences outcomes. Despite the consistency of outcomes reported and many aspects of good practice in project evaluations, there are some concerns about evaluation methodology, notably that the estimation of outcomes might be systematically biased. The main concerns relate to independence of evaluators, sample sizes and survey response biases. A priority in future project evaluations is to use independent evaluators and to collect aggregate-level travel data with which to corroborate survey-based results and enable monitoring of outcomes over longer time-scales. Another priority is to increase the understanding of how design elements of PTP projects influence behavioural outcomes and to develop appropriate research methods to investigate this. Improved evaluations will better enable the value for money of PTP to be assessed relative to other investment options.     

Same city—different options: An analysis of the work trips of married couples in the metropolitan area of Oslo

The question raised in this paper is in which ways the urban structure interacts with or creates different conditions for activities made by men and women. To explore this question the paper focuses on the travel to work of married couples in an urban context, how they adapt time use and deal with the spatial choices of work places and the allocation of transport resources. The empirical analyses are based on a personal travel study from the Oslo-region in 1990/91. Women work closer to their homes than the husbands, and have less choice on the geographical labour market. In families with one car, the husband has the first choice. Women have more often tasks on the way to and from work related to household responsibilities.     

Land use and transport: research and policy challenges

In the debate on the impacts of land use on transport two questions are of particular importance: (1) does land use affect travel behaviour and (2) if land use affects travel behaviour, should land-use policies be partly based on (expected or assumed) transport impacts? There is enough evidence to conclude that land use can influence travel behaviour. However, this does not mean that policy-makers should choose land-use alternatives with the lowest level of car use. Possible future land-use and transport plans should be evaluated according to a broad range of factors. Several challenges for research and policy-making related to these aspects are presented here.     

旅客旅行舒适度的需求分析

影响旅客舒适度的主要因素有人均占用面积、旅行时间、站车环境、运行平稳度和客运服务水平。不同职业和出行目的的旅客,对旅行舒适度的需求有所不同。铁路客运专线建设为旅客出行提供了更人性化的设计和高标准的软硬件环境,舒适度的改善将使旅客出行更加舒适愉快,也将进一步增强铁路客运的市场竞争力。