| dc.description | Traffic lights, developed since 1912, are signaling devices that are conceived to control the traffic
flows at road intersections, pedestrian crossings, rail trains, and other locations. Traffic lights
consist of three universal colored lights: the green light allows traffic to proceed in the indicated
direction, the yellow light warns vehicles to prepare for short stop, and the red signal prohibits
any traffic from proceeding.
In recent years in Uganda specifically, popularity of private cars is getting urban traffic more
crowded and this has raised problems that affect the transportation system in cities and cause
serious dilemma. The rapid increase of the number of automobiles and the constantly rising
number of road users are not accompanied with promoted infrastructures with sufficient resources.
Partial solutions were offered by constructing new roads, implementing flyovers and
bypass roads, creating rings, and performing roads rehabilitation but this hasnˆat yet worked
out.
The current traffic light system is implemented with hard coded delays where the lights transition
time slots are fixed regularly and do not depend on real time traffic flow. In addition,
a crucial issue is related to the smooth motion through intersections of emergency vehicles of
higher priorities such as ambulances, rescue vehicles, fire brigade, police, and VIP persons that
could get stuck in the crowd.
Some of these concerns are traffic congestion that usually cause a significant waste of time,
property damage and environmental pollution. Any type of congestion on roads ultimately
leads to financial losses. Therefore, there is an urgent need to improve traffic management.
The appearance of the Internet of Things (IoT) provides a new trend for intelligent traffic development.
This research proposes to employ the IoT, agent and other technologies to improve
traffic conditions and relieve the traffic pressure. | en_US |
| dc.description.abstract | Traffic light control systems are widely used to monitor and control the flow of automobiles
through the junction of many roads. Their aim is to realize smooth motion of cars in the
transportation routes. However, the synchronization of multiple traffic light systems at adjacent
intersections is a complicated problem given the various parameters involved. Conventional
systems do not handle variable flows approaching the junctions.
In addition, the mutual interference between adjacent traffic light systems, the disparity of
cars flow with time, the accidents, the passage of emergency vehicles are not implemented in
the existing traffic system. We propose a system based on Arduino and IoT that evaluates
the traffic density using IR transmitter sensors and accomplishes dynamic timing slots with
different levels especially in cases of emergency conditions. | en_US |
