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.

<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.

The purpose of the following research was to determine
whether conspicuity of an illuminated traffic signal
lens could be increased with a modulating incandescent
light source. Experiments were conducted both in the
laboratory and a controlled field setting under normal
and degraded viewing conditions using both static and
dynamic testing situations.

The purpose of the following research was to determine whether conspicuity of an illuminated traffic signal lens could be increased with a modulating incandescent light source. Experiments were conducted both in the laboratory and a controlled field setting under normal and degraded viewing conditions using both static and dynamic testing situations.

<p>This report presents the results of a research project aimed at providing insights into the human factors associated with nighttime work zones on the New Jersey Department of Transportation construction and maintenance projects. It examines the impacts that nighttime construction activity has upon the workers and seeks to define work standards to mitigate these factors. These impacts are assessed through field surveys, focus group and interviews that included: highway engineers, construction workers (laborers), field supervisors, and contractors.</p>

<p>This paper presents the results of a research project aimed at providing insights into the human factors associated with nighttime work zones on the New Jersey Department of Transportation construction and maintenance projects. It examines the impacts that nighttime construction activity has upon the workers, from their perspective. These impacts were assessed through field surveys and interviews that included: highway engineers, construction workers, field supervisors, and contractors. The research methodology is briefly discussed.

The project examined the impacts that nighttime
construction activity has upon the workers and sought
to define work standards to mitigate these factors.
Thirty construction workers on four highway
construction projects, along with a focus group of union
laborers, were interviewed for their opinions and
comments to questions on human factors related to
work on nighttime work zones in the fall of 2000. Field
data from interviews were analyzed for human factors
such as sleep deprivation, eating habits, commuting

<p>Herbicides have been widely used to control vegetation on roadside rights-of-way because they are perceived as more cost effective than other treatments. However, as knowledge of environmental systems has developed along with a growing social perception of health and environmental issues, a need for alternative methods to synthetic herbicide use for vegetation control along roadsides has become a prominent issue. Earlier phases of this research indicated several promising physical, cultural, biological/ecological, and chemical controls.

<p>In 1998, the State of New Jersey passed a Graduated Driver Licensing (GDL) law to take effect on January 1, 2001. The law enacted a three stage licensing system; in simplified form this consists of: 1. Special learner?s permit for 16 year olds, during which the new driver must be supervised by an experienced driver over 21; 2. Provisional license for 17 year olds who have completed minimum of 6 months with a learner?s permit, during which the new driver may not drive between Midnight and 5 AM and is restricted in the number of passengers under 21 that may be carried; and 3.

<p>New Jersey started enforcing a graduated driver license (GDL) system on January 1, 2001. The system requires a three-step process for full licensing: learner&#39;s permit at 16 years of age at the earliest; provisional license at 17; and, a basic license at 18. This report is the first phase of an evaluation of the New Jersey GDL system. The number and types of traffic crashes, traffic violations, and license suspensions in New Jersey by age for the years immediately before 2001 were analyzed.