Environmental Assessment
Volume C-5.5
Slurry Pipeline
Traffic
and newly developed access routes linking RN2 to the pipeline route. Although
conceptual plans for such routes have been developed, the final alignment of the
access routes has not yet been determined. An assessment of traffic effects along
the access routes will be carried out when final plans are made (pipeline EA
amendment).
Accident Rates
Existing accident rates (measured as number of reported accidents per one
million motor vehicle kilometres driven) have been documented on the RN2
between Brickaville and Toamasina at 3.12 per million vehicle kilometres
(Volume K, Appendix 5.1). The road conditions along other parts of RN2 are
assumed to be equivalent to this, and accident rates are assumed increase
proportional to the increased traffic. Based on the additional estimated traffic
volumes, impacts on accident rates have been estimated and are shown in
Table 5.5-4.
Table 5.5-4 Changes in Accident Numbers Between Moramanga and Toamasina
During Pipeline Construction
Parameter
Number
baseline traffic kilometres
476,736 trips x 250 km =
119 million km
baseline accident rate
372 per year
traffic kilometres per year during construction
Base + 0.58 million km
incremental increase (and % increase) in accidents
(without mitigation)
2 accidents (0.5%) per year
Noise and Vibration Disturbance
Noise
The noise assessment of traffic focuses on motorized vehicles during
construction only. Vehicles used during maintenance and inspection activities
are considered to have a negligible effect on traffic levels. The primary sources
of noise from motorized vehicles are:
•
motors; and
•
interaction of vehicle tires with the road surface.
The amount of noise generated by individual vehicles used for the project is
expected to be similar to vehicles already in use in Madagascar. Therefore
Ambatovy Project
201
January 2006
