Design speeds and acceleration characteristics of bicycle traffic for use in planning,design and appraisal

This paper reports the results of a study of a cohort of cyclists to determine their speed and acceleration characteristics relative to gradient and other influencing factors in order to supply data for planners, designers and appraisers of cycle infrastructure schemes. A cohort of everyday cyclists was supplied with a global positioning system device and a heart rate monitor and asked to collect data from their journeys in Leeds, UK.The analysis determines the cyclists’ speeds and accelerations at every point on their journey and elevation data, corroborated by mapping information, was used to determine the gradient. Two linear regression models of speed and acceleration were estimated and show that the influence of a downhill gradient on speed is less pronounced than the effect of an uphill gradient. The results indicate an eighty-fifth percentile speed on the flat of 22 kph, and for a downhill gradient of 3%, 25 kph. The power required to cycle has been estimated and shows that cyclists deliver around 150 W on the flat, but that this rises to around 250 W climbing hills. Mean acceleration on the flat is 0.231 m/s² and the average power output over the acceleration phase, which is of mean duration 26 s, is approximately 120 W. Air resistance accounts for approximately 70% of the resistive force when cycling at design speed.It is recommended that designers adopt 25 kph as a design speed for gradients less than 3%, but that consideration should be given to design speeds of up to 35 kph for steeper gradients. Free-flow speeds in this range should be used when modelling mode and route choices and in benefit appraisal.     

Commuting patterns of employees in the Information Technology and traditional manufacturing sectors of Bangalore, India

Rapid growth of the Information Technology (IT) sector in Bangalore, India, has transformed the city’s urban-industrial landscape since the liberalization of India's economy in 1991. The city's IT sector is closely integrated with a global system of production and caters largely to a global clientele. Apart from the impact of these developments on urban form, there are indications that they are causing uneven growth patterns and socio-economic polarization, which has resulted in different travel patterns in the work force. This paper compares the commuting patterns of employees in two types of firms, an IT multinational corporation and a traditional public-sector-unit (PSU), using data from a survey. Regression models show that there is a significant increase in travel cost as income rises for a sample of employees of the IT sector, even though travel distance is not influenced by income. The reverse holds true for a sample of employees of the PSU—rising income significantly increases distance though income does not affect travel cost. Behavioral choice models also show that with increasing income IT employees are more likely to choose two-wheelers and cars for commuting while PSU employees are more likely to choose public buses or walk to work. The paper suggests that Bangalore's services-oriented IT economy is magnifying differences in work commuting patterns relative to those in the traditional manufacturing economy. The IT economy is also transforming travel behavior in terms of work travel mode choices among socio-economic groups.     

Public bicycle as a feeder mode to rail transit in China: The role of gender,age, income,trip purpose,and bicycle theft experience

A marriage between public bicycle and rail transit presents new opportunities for sustainable transportation in Chinese cities. To examine determinants of public bicycle usage for rail transit access, an intercept survey of feeder mode choice among rail transit users was conducted near rail stations in Nanjing, China. Mode choice models were estimated with five feeder mode alternatives, including car, bus, walk, private bike, and public bike. By differentiating between public and private bicycle modes in the mode choice models, the study reveals the effects of personal demographics, trip characteristics, and station environments on public bicycle usage for rail transit access. Results show that female, older, and low-income rail commuters are less likely to use public bicycle to access rail transit. Rail commuters with bicycle theft experience and making school- or work-related trips are more likely to use public bicycle to access rail transit. Land use variables are largely insignificant in this study except that density shows a positive relationship with walking to rail transit. The results on demographic differences raise equity concerns when it comes to investing in public bicycle systems. Policy implications are discussed for Chinese cities to equitably boost public bicycle integration with rail transit.     

Policy,users and discourses: Examples from bikeshare programs in (Kolkata) India and (Manila) Philippines

This paper examines two bikeshare programs implemented in two Global South cities, examining the role of users in promoting sustainable transport. To explore the sustainability of smart cycling, we argue that it is important to understand the prevailing administrative and socio-institutional practices within a given context. For the effective stabilisation of smart regimes, harmony between the administrative and socio-institutional practices must be established. In this context, we introduce a complementary approach to understanding transitions. Maintenance of political commitments and institutional support are crucial for cycling success, not incidental footloose initiatives. We explore two case studies in the context of the Global South, in the first one top-down policies and planning initiatives dictate the directions of transitions by enabling or constraining user routines. In the second one, citizens take control to resolve a transport deficit by initiating and driving a very bottom-up user-led transition narrative. We propose a framework to cater to the unique political, cultural and smart discourses of the Global South and the role of users in conjunction with the administrative and socio-institutional practices around them. Investigating both the bikeshare cases through the lens of this framework provides unique insights extending our knowledge beyond the built environment features of sustainable planning initiatives. Our findings reveal the complex narratives that are in play in developing nations and conclude that understanding and realising cycling transitions in southern megacities require a different approach compared to the Global North.     

Redistributive effects of bus rapid transit (BRT) on development patterns and property values in Seoul, Korea

This study investigates the redistributive effects of Seoul's bus rapid transit (BRT) system on development patterns and property values using an urban simulation model. The Seoul Metropolitan Integrated Urban Model (SMIUM) combines the Seoul metropolitan input-output model with random utility-based location choice models and endogenous real estate markets.The major findings of this study can be highlighted as follows. First, Seoul's BRT contributes to increased development density in urban centers, acting as a centripetal force to attract firms from the suburbs into urban cores and supporting arguments for Smart Growth proponents. Second, unlike its redistributive effects on nonresidential activities, the BRT has a limited effect on the redistribution of residential activities, implying that residential locations are less sensitive to accessibility improvements made by the BRT than are nonresidential locations. Third, reflecting the transferred space demands from the suburbs to the urban cores, the CBD reaps the highest property value gains, while all of the outer ring zones suffer from reduced property values.     

Exploring travel patterns and trip purposes of dockless bike-sharing by analyzing massive bike-sharing data in Shanghai,China

In recent years, dockless bike-sharing has rapidly emerged in many cities all over the world, which provides a flexible tool for short-distance trips and interchange between different modes of transport. However, new problems have arisen with the fast and extensive development of the dockless bike-sharing system, such as high running expenses, ineffective bike repositioning, parking problems and so on. To improve the operations of the dockless bike-sharing system, this study aims to investigate the travel pattern and trip purpose of the bike-sharing users by combining bike-sharing data and points of interest (POIs). A massive amount of bike-sharing trips was obtained from the Mobike company, which is a bike-sharing operator in China. The POIs surrounding each trip origin and destination were derived from the Gaode Map application programming interface. K-means++ clustering was adopted to investigate dockless bike-sharing travel patterns and trip purpose based on trip records and their surrounding POIs. The clustering results show that on weekdays, bike-sharing trip origin and destination can be divided into five typical groups, i.e., dining, transportation, shopping, work and residential places. Dining is the most popular trip purpose by bike-sharing, followed by the transferring to other transportation modes and shopping. In addition, through understanding the spatial distribution of the bike-sharing usage patterns of five typical activities, strategies for improving the operation of the dockless bike-sharing system are provided.     

The influence of residential dissonance on physical activity and walking: evidence from the Montgomery County,MD, and Twin Cities,MN, areas

This study investigates to what extent a mismatch between residential preferences and actual residential locations is associated with residents’ physical activity and walking. The residents of Montgomery County, MD, and Twin Cities, MN, were classified into four residential subgroups, and their walking and physical activity outcomes were compared. The results showed that, for transport activity and walking outcomes, participants living in a urban location and preferring a urban environment were more likely to be active than those who lived in a suburban location and preferred a suburban environment. In a highly dense region, the influence of preferences might be overridden by the characteristics of neighborhood locations. With respect to recreation activity, no significant associations were found regarding neighborhood locations or preference for neighborhood environment.     

Impacts on travel behaviour of Greater Manchester’s light rail investment (Metrolink Phase 1): evidence from household surveys and Census data

Household survey data from 1990 and 1993 and Census data from 1991 and 2001 are used to detect some short and medium term impacts on travel of the Metrolink light rail services which opened in 1992. Particular attention is paid to research design issues to try to isolate Metrolink’s impacts from those of other influences on travel behaviour. In the short term a more marked decline in the frequency of bus use is found in the Metrolink corridor compared with conventional rail and ‘no rail’ corridors. Changes in the frequency of rail use are more prominent in the Metrolink corridor, both to the highest frequency use but also to lower frequency use. Higher frequency rail use tends to be associated with respondents who have limited or no car availability, who are in employment, who are of non-manual social class and who are aged 18–44 years. Metrolink appears to have attracted at least as many former car users as former bus users, but the former car users tend to use the light rail services less frequently. Census commuting data suggest that, in the medium term, Metrolink has increased rail’s share of trips, especially to the city centre, contributed to the declining share of bus trips and may have helped to restrain work trips by car.     

Assessment of mobility inequalities and income data collection. Methodological issues and a case study (Douala,Cameroon)

In order to understand the scale and nature of inequalities in intra-urban mobility we need reliable income data, but this is generally difficult to collect in household surveys. The methodological approaches that are employed to overcome difficulties in income data collection may affect the relative position of individuals and households within the income distribution and our estimates of mobility inequalities. In the context of a case study of Douala, this paper evaluates how the way income data is collected affects its accuracy and therefore the measurement of daily mobility inequalities. Simplified data collection tends to minimise the scale of inequalities as it misrepresents the income distribution. The error is greater in remote zones. Shortcomings in the statistical apparatus with regard to income data thus blur our perception of mobility inequalities and impede investigation of the links between daily travel, poverty and social exclusion.     

Smartphones,travel time-use,and attitudes to public transport services. Insights from an explorative study of urban dwellers in two Norwegian cities

The uptake of mobile media with internet connection has increased rapidly in almost every part of the world, and this has significantly changed how public transport passengers use their travel time. Studies have documented that use of mobile information and communication technologies (ICT) while traveling has the potential to enrich use of travel time and in some cases, strengthen positive attitudes towards public transport. The alternative hypothesis—that mobile communication technologies make travelers more critical and demanding, e.g., due to the risk of interference—has so far hardly been explored through empirical studies. Based on a web-based survey of travelers in two of the largest cities in Norway (Oslo and Trondheim), this paper investigates how use of smart devices are related to general attitudes toward public transportation services. A segmentation of travelers in three clusters based on their mobile use habits, shows that the most active group of mobile media users—a group of younger and middle-aged urban dwellers—were those who bore the most critical attitudes to the public transport services. In contrast, the groups that used their mobile phones rarely, or less actively, on their public transport trips were more satisfied. The findings suggests that a new generation of “equipped travelers” has developed expectations regarding their public transport journeys that service providers might have problems to fulfill in current times. Thus, there is a risk of the most active smartphone users developing negative attitudes to public transport if (or when) their experiences are not improved.     

The use of infrared sensors and digital cameras for documenting visitor use patterns: a case study from D'Aguilar National Park,south-east Queensland,Australia

This study assesses the use of pyroelectric infrared sensors combined with digital cameras to document visitor use patterns on a Horse Trail Network within an area of D'Aguilar National Park; a peri-urban bushland reserved for a range of purposes and used by several user-groups. Data were obtained from four cameras and comprised 7000 photographs over 1000 days. Forty-five percent of photographs were false triggers attributable to environmental factors and 42% were of confirmed users. An exercise aimed at assessing camera success revealed that in this study capture rates were in the order of 63% for cyclists, 82% for pedestrians, 90% of motor vehicles and 100% for horses. Sources of error can be minimised and primarily include the internal and external camera settings. Major advantages of infrared digital cameras include the portability of the technique, low cost, digital data format and discrimination of user types. In this case study, two-thirds of total observed visitor numbers occur on weekends and two-thirds of all use occurs during morning daylight. Cyclists were the most common user-group per day, followed in descending order by walkers, joggers, motorised users, dogs, bushwalkers, horse-riders and trail-bike riders. Implications of this data for management are discussed.     

Assessing the effects of perceived value (utilitarian and hedonic) in LCCs and FSCs: Evidence from South Korea

In the airline industry, passengers choose and buy service based on their perception of which airline delivers better value. Thus, it is important to compare two types of airlines, Low Cost Carriers (LCCs) and Full Service Carriers (FSCs), to measure how much their product or service is worth and the effect of perceived value on passengers' purchase decisions. This study examined the relationship between perceived value, satisfaction, and purchase intention in both FSCs and LCCs. Confirmatory Factor Analysis (CFA) and Structural Equation Modeling (SEM) were performed for data analysis. Our findings reveal that passenger satisfaction in LCCs is affected by hedonic value and utilitarian value, but passengers' future purchase intention is not dependent on satisfaction even when passengers are satisfied. In FSCs, moreover, utilitarian value is not a significant factor for satisfaction and purchase intention. This research provides implications for airline marketers and directions for future research.     

Access to the city: Mobility patterns,transport and accessibility in peripheral settlements of Dar es Salaam

This paper is concerned with access to the city for urban residents living in the periphery of Dar es Salaam, Tanzania. The paper presents an analysis of the mobility practices of residents and investigates the mobility constraints they experience in relation to the limited accessibility provided by the urban transport system. The paper draws upon qualitative interviews with residents in the periphery as well as recently collected travel speed data and offers a unique combination of testimony with GIS-based modelling of overall accessibility. A central finding is the overall importance of regular mobility and access to the city for residents in the periphery. Regular mobility is an ingrained part of residents' livelihood strategies. The majority of households rely on one or more members regularly travelling to central parts of the city in relation to their livelihood activities. The analysis reveals a widespread, near-to-universal, dependence on motorized transportation, with the vast majority depending on public transport. Raster-based modelling of overall accessibility provides an indication of the very high travel times endured by residents in the periphery. The analysis identifies and distinguishes between three overall mode types: 1) Private car, 2) public transport and 3) motorcycle/car combined with public transport. While private cars appear marginally faster, differences in travel times are actually limited. This suggests that travel times are less influenced by mode of transport than by road and traffic conditions and highlights how accessibility problems of peripheral settlements are not easily understood separately from the general dysfunctions of the overall mobility system of city.     

Attributes affecting the level of tourist satisfaction with and loyalty towards theatrical performance in China: Evidence from a qualitative study

This study seeks to explore attributes affecting the level of tourist satisfaction with and loyalty towards theatrical performance in China. Based on four focus group discussions with 31 participants, the study identifies 34 attributes that affect the level of tourist satisfaction with theatrical performance, and groups them into five categories: stage, performance, venue, service and tourist‐related attributes. The findings on tourist loyalty reveal that 21 of the 31 respondents would not watch the same theatrical performance alone in the future; however, they would recommend it to others. The study concludes with a discussion of the rich and insightful findings and their implications for tourism industry practitioners. Copyright © 2010 John Wiley & Sons, Ltd.     

Households with every member out-of-home (HEMO): Comparison using the 1984, 1997, and 2012 household travel surveys in Kumamoto,Japan

Most existing studies using household travel surveys have focused on travel behavior; however, this study demonstrates another use: examining the temporal profile of households with every member out-of-home (HEMO). Because a household travel survey records all trips by each member of a household, the calculation of HEMO is not a difficult task; however, few studies have empirically shown the temporal profile of HEMO rates. This study calculated the HEMO and individual out-of-home (IO) rates using a household travel survey, also known as the Person Trip (PT) survey in Japan. Specifically, we compared these rates using the Kumamoto PT surveys in 1984, 1997, and 2012 and discussed the factors for change using a novel method to decompose the change in HEMO. The results showed that the HEMO rate has increased considerably, although there was no major change in the IO rate over 28 years. Decomposition analysis revealed that the increase in HEMO is mainly attributed to an increase in single-person households and active seniors, and a decrease in household size.     

The geography of the Spanish airport system: spatial concentration and deconcentration patterns in seat capacity distribution, 2001-2008

This paper analyzes the geography of seat capacity at Spanish airports between 2001 and 2008. Concentration and deconcentration patterns for different markets have been identified. For this purpose, we use the Herfindahl-Hirschman Index (HHI), the Concentration Ratio (CR) and the Lorenz curve. From our analysis, we conclude that seat capacity follows a deconcentration pattern due to the growth of low-cost carriers at small- and medium-sized Spanish airports. This is in line with earlier studies for Europe as a whole. Intercontinental seat capacity still remains very much concentrated in Madrid and, to a lesser extent, in Barcelona. However, new strategies by long-haul airlines bypassing the primary European hubs foster the deconcentration of seat capacity in the Asian and North American markets. In the case of Spain, the recent liberalization of the EU-US market may become an important enabler of such network strategies, e.g., Delta has operated a route from Valencia to New York-JFK since 2009. In other intercontinental markets, capacity is more and more concentrated in Madrid. We highlight the restructuring of Iberia’s network as an important factor behind the increasing dominance of Madrid in intercontinental markets.