<p>Road traffic crashes and injuries constitute major health, economic, and developmental challenges to African countries. For its 4 per cent of the world?s motor vehicles, the fatalities on African roads exceed 10%. With further motorization, the number of road traffic crashes, injuries and fatalities are expected to continue to grow. The road carnage has severe impact on the human, social and economic development. The present study intends to update the status, trends, causes, existing countermeasure, and issues in traffic safety, facing African countries.

An integral-abutment bridge is designed to transfer the temperature and traffic-induced horizontal loading
to its foundation by the use of a continuous joint between the superstructure and its abutment. The
connection eliminates the need for bearings, which have been a source of expensive rehabilitation, and
accommodates the horizontal movement through a flexible stub-abutment supported on piles. Although
integral abutments have been used successfully by many states, a nationally accepted design methodology

<p>Young, middle and older drivers were motored towards a traffic signal face and were required to report whether the illuminated signal lens was modulating. No significant differences were found among the three age groups in the distance at which modulation was first reported nor in the change of the modulation pattern as they approached the signal face. The modulating of the illuminated green lens was percieved signifcantly further away than was the red lens. These distances increased during trials associated with inclement weather.

Investment in transportation infrastructure is generally regarded as an effective means for inducing economic growth and employment in a region. However, the ability of such investments to achieve these objectives, to a large extent, depends on the degree to which travel results from these investments support or conflict with present travel patterns and needs in this region.

<p>Traffic congestion in Northern New Jersey imposes a substantial time operational penalty on bus service. The purpose of a project was to quantify the additional travel time that buses need because of traffic congestion. A regression model was developed to estimate the travel time rate (in minutes per mile) of a bus as a function of car traffic time rate, number of passengers hoarding per mile, and the number of bus stops per mile.

<p>The changing perception of the safety of transportation modes is, in particular, affecting the way in which the traveling public makes choices concerning mode of transportation, place of work, and location of residence. On September 10, most travel analysts would have said that reliability, travel time, and cost were the primary determinants of mode choice. On September 12, personal security became, and still remains for many New Yorkers, a key concern.</p>

Over the last decade, a large number of high capital cost transportation projects
have been proposed for the New York City Region. Many have resulted from addressing
evolving capacity needs, changes in regional demographics and economics, meeting the
improvements necessitated by operating century old subway systems and recognizing the
impact of moving freight in a dense region. But the catalyst for bringing all of these projects
to the attention of the public and all regional agencies was the tragedy of September 11, 2001.

Fiber reinforced polymer (FRP) composites represent an alternative construction
material without many of the performance disadvantages of traditional materials. The use of FRP
as a pile material can eliminate deterioration problems of conventional piling materials in water
front environments and aggressive soils. This paper presents the results of one-year
experimental study conducted to assess the durability of piling made of recycled plastics in
aggressive soils for long term usage in civil infrastructure applications. An accelerated testing

Many communities in the US and around the world—whether urban, rural, or suburban—are interested in providing effective paratransit services that are also reasonably good performers from the viewpoint of environmental sustainability. Herein, paratransit will be understood in the general sense of flexible passenger transportation that does not follow fixed routes or schedules, and often serves the transportation needs of the handicapped or elderly. Typically, paratransit systems exist because laws and regulations require the services to be provided, and because governments are able to provide the needed subsidies. Public or private operators who deliver paratransit services often do so via fleets of vans or mini-buses. Paratransit ranges widely in terms of the flexibility of the provided services, which can range from relatively inflexible transportation along a more or less defined route, to fully “demand responsive” service that offers door-to-door transportation, on-demand. Given the governmental subsidies needed to support paratransit, policymakers are increasingly considering ways to operate paratransit systems more effectively. Likewise, they are increasingly interested in the environmental sustainability of paratransit.

<p>Fiber-reinforced polymer composites represent an alternative construction material without many of the performance disadvantages of traditional materials. The use of fiber-reinforced polymer as a pile material can eliminate deterioration problems of conventional piling materials in waterfront environments and aggressive soils. This paper presents the preliminary results of an experimental study conducted to assess the durability of piling made of recycled plastics in aggressive soils for long-term usage in civil infrastructure applications.