INTRODUCTION:
One
of the most salient aspects of Africa is its unfortunate traffic situation and
the reasons are numerous and diverse (Sabet, 2013). According to Asian
Development Bank (2011), accompanying the increase in Africa’s population has
been a rise in the number of vehicles on the road. Unfortunately, transport
infrastructure has failed to keep up with this dramatic growth; and perhaps
more importantly, the existing infrastructure is often poorly planned or
introduced after development occurs. The rapid increase in the number of motor
vehicles on highways has created a major social problem - the loss of lives
through road accidents. The appalling human misery and the serious economic
loss caused by road accidents along highways demand the attention and calls for
a solution to the problem.
Road
accidents claim many lives every year and most of these accidents involve pedestrians.
This finding is supported by Sabet (2013) that in low to middle income
countries in particular, pedestrians and cyclists account for the major
proportion of road traffic injuries. The effect of the high number of
pedestrian injuries in low to middle income countries includes not only the
physical consequences of disablement and death, but also carries a psychosocial
burden of trauma for both the victims and their families (Peden et al., 2004).
Moreover, the economic impact on a broader societal level clearly identifies
pedestrian injury as a serious public health concern and intervention in this
area as a major challenge.
These
road accidents can be lessened by providing pedestrian crossing facilities coupled
with strict enforcement to ensure that the facilities are put into use in
addition to creating public awareness through civic education. In this regard,
a contributing factor in facilitating the flow of pedestrian movement is
creating over/underpass. Pedestrian bridges (footbridges) can address real or perceived
safety issues and can represent one of the most important elements of a
community’s non-motorized transportation network (Manjanja, 2013).
According
to Hasan and Napiah (2014), accidents between pedestrians and vehicles were
studied in terms of minimizing conflict between these two modes while
maintaining the continuous free motor traffic flow and the safety environment
for pedestrians who are the most vulnerable road users. Therefore, the classic
approach to pedestrian safety improvements is the separation from vehicles
either by space or time. A way to achieve that is by grade separation built
either above or below the street level. Accordingly, such physical changes to
the environment can significantly decrease the rate of pedestrian-vehicle
crashes (Retting et al., 2003).
Pedestrian
bridges are provided at locations where high vehicle speeds and heavy traffic
volumes take place, where there are hazardous pedestrian crossing conditions
like in areas where there are few or no gaps in the traffic stream, conflicts
between motorists and pedestrians and in locations where large numbers of
school children cross busy streets. The construction of footbridges at
hazardous road locations is gradually increasing in Africa. In countries such
as Ghana, Kenya and Tanzania, governments have provided a considerable number
of footbridges on various major highways so as to ensure safe crossing of
pedestrians and to reduce existing pedestrians and vehicular conflicts.
SITUATIONAL ANALYSIS:
In
the words of Hasan and Napiah (2014), footbridge is one of the safest
pedestrian crossing facilities, yet most often pedestrian do not use it, and
prefer to cross the road on the surface. International research in low to
middle income countries have shown that pedestrian safety interventions are
underutilised. Despite the high number of pedestrian deaths and the
construction of a number of footbridges in African countries such as Ghana,
Kenya, South Africa and Tanzania, pedestrians in these countries still opt to risk
their lives in crossing the roads (Ojo et al., 2022; Hassan et al., 2020).
It
is indicated by Zegeer (2002) that if a pedestrian can find more direct route
and same or less time to cross at street level, the usage of the footbridge
will be decreased, and the risk probability will be increased. Manjanja (2013) has
explained that the non-use of footbridges is among the major reasons for
mishaps on the city streets. And yet despite the severity of the problem, traffic
laws go largely unenforced, creating an environment whereby drivers and
pedestrians can act without concern for legal consequences.
SUMMARY OF FINDINGS FROM CASE
STUDIES:
This
section looks at key findings on footbridge facility in some selected African
countries including Kenya, Tanzania, Ghana and South Africa.
(1) The new approaches of
urban and transportation planning are being aimed to facilitate pedestrian movement and improve the quality of spaces denoted specifically to pedestrians
recently.
(2) Footbridges are popular
but often ineffective. The footbridge as a facility is to separate pedestrian from motor vehicle traffic. Though theoretically true, but in practice this
rarely occurs for several reasons such as:
(i) Bridges
are so expensive, and cannot be built at most locations where pedestrians may
prefer to cross.
(ii) Many
pedestrians will not walk extra distance in their trip, and because of the
accessible ramps which will increase the distance, they will cross at grade
level.
(3) Despite the high number
of fatalities, despite the obvious risks, and despite conclusive evidence of
the problem, pedestrians might not take even simple steps that are fully within
their control to improve their safety.
(4) The structural design of
the footbridge has a great effect on the usage of it; therefore, it should
comply with the recommended standards designs. The main factors hindering the
effective usage of the facility include security, time constraints, tiredness,
dizziness, inadequate facilities to support disabled, aged people and the sick.
(5) Some pedestrians
preferred signalized crossing to bridges and underpasses and that was mainly because of the ascending and descending movements required on these facilities and
the effort involved in climbing a grade which is resulted from the vertical
dimension of the stairs slope.
(6) In Kenya, there has been
fencing along sides of the street or in the median for several hundred feet on
either side of the grade-separated crossing to raise the efficiency of the
usage. The existence of the fence on both sides of the street plays an
important role in preventing pedestrians from jaywalking, especially if it is
built in continually shape with no spaces, and for long and convenient distance.
(7) Studies contend that the
decision to use a pedestrian bridge is not so much the product of risk assessments or probabilities, but of simple habit. From this perspective, those
that have used a footbridge in the past are more likely to use it in the future
and those who cross the street dangerously in today are more likely to do the
same tomorrow. As such, past behaviour
will be the best predictor of footbridge use.
(8) Footbridges are generally
made to provide pedestrians a safe route to cross roads. However, the occurrences of accidents and jaywalking in Kenya, Tanzania, Ghana and South
Africa prove that footbridges are underutilized by pedestrians in these
countries.
RECOMMENDATIONS:
Based on the findings of the study, the
following solutions have been provided to
enhance and sustain footbridge usage by pedestrians.
(1) Adopt user-friendly
designs for the benefit of all persons (pedestrians). Thus, footbridges should
be user friendly. The criteria for user friendliness are:
- The design of footbridges
should be modified to accommodate the disabled, aged people, the sick and cycle
traffic.
- Footbridges should
be free from all commercial and other activities.
- All footbridges should
be free of any billboard or ads of any form.
- Good access to footbridges is a
must. Good access means convenient approach to the footbridges without
any encumbrance. For example, an appropriate location
for a footbridge should be near a bus stop. Location consideration should be a
priority.
- Footbridges should
be aesthetically beautiful and well maintained.
- Footbridges should have security
lighting for pedestrians.
- There should be police
patrol during the night especially for the covered footbridges.
(2) Fencing the road dividers
and the footpath are the effective method to direct the pedestrians towards the
footbridges. Fencing the road dividers and awareness campaigns for the
pedestrians and vehicles operators should be promoted to ensure safe road
crossing.
(3) Public education and awareness
campaign for use of footbridges should
be organized. Education and public relation program must
be conveyed to people so that they are aware of current law enforcement on
footbridge uses.
(4) Pedestrian safety
measures must take cognisance of the local context of perceived and real crime, poverty and increased urbanisation and adopt a multidimensional approach. The
focus on educational interventions must widen to include engineering measures that
recognise pedestrians as significant road users.
(5) City authorities must pay
attention on building footbridges that not only serve the real needs but encourage the use by pedestrians. Feasibility studies should focus on
pedestrians’ behavioural characteristics and attitudes in order to determine
the right, safe and efficient footbridge designs and locations.
CONCLUSION:
The
study concludes that much remains to be done on footbridges in their
construction technology so as to attract more pedestrians and cyclists to use
the facility effectively. The study envisages that the use rate is likely to
improve if safety benefits and convenience of using the footbridge without
considerable time loss are clearly visible to pedestrians. On the other hand,
the challenge of getting pedestrians to use footbridges will fail when there is
absence of sustained planning, improved infrastructure, enforcement and
educational efforts.
REFERENCES:
Asian
Development Bank (2011). Sector assessment: Transport. Country Partnership
Strategy: Bangladesh 2011-2015. Asian Development Bank.
Hasan,
R. A., and Napiah, M. B. (2014). The Effect of Structure and Street
Characteristics on the Footbridge Usage. Journal of Applied Science and
Agriculture, 9(21) Special 2014, Pages: 52-59.
Hasan,
R., Oviedo-Trespalacios, O., Napiah, M. (2020). An intercept study of
footbridge users and non-users in Malaysia. Transportation Research Part F:
Traffic Psychology and Behaviour, 73, 66–79. doi:10.1016/j.trf.2020.05.011.
Manjanja,
R.A. (2013). Non-Usage of Pedestrian Footbridges in Kenya: The Case of Uthiru
Pedestrian Footbridge on Waiyaki Way. School of Engineering of University of
Nairobi.
Ojo,
T. K., Appiah, A. B., Obiri-Yeboah, A., Adebanji, A. O., Donkor, P., Mock, C.
(2020). An intercept survey of the
use and non-use of footbridges in Ghana. Case Studies on Transport Policy. https://doi.org/10.1016/j.cstp.2022.05.016.
Peden
M., McGee, K., and Sharma, G. (2002). The injury chart book: A graphical
overview of the global burden of injuries. Geneva, World Health Organization.
Retting,
R.A., S.A. Ferguson, and A.T. Mccartt (2003). A review of evidence-based
traffic engineering measures designed to reduce pedestrian-motor vehicle
crashes. American Journal of Public Health, 93: 1456-1463.
Sabet,
D.M. (2013). Fear Is Not Enough: Testing the impact of risk on pedestrian
behaviour in Dhaka, Bangladesh. Center for Enterprise Society.
Zegeer,
C. S. (2002). Pedestrian Facilities Users Guide: Providing Safety and
Mibility-Publication No. FHWA-RD-01-102. New York, U.S. Department of
Transport, Federal Highway Administration.