Environmental Assessment
Volume B-5.5
Mine
Traffic
Ambatovy Project
394
January 2006
of traffic occurs during daylight hours (taken as 14 hours per day) and that
project-related traffic will also be during daylight hours, a change of between one
and four vehicles per hour can be expected. On RN44 (the
Ampitambe-Moramanga route), one to two trucks per hour can be expected.
Table 5.5-5 provides an analysis.
Table 5.5-5 Number of Vehicle Pass-Bys (Noise Events) per Daylight Hour
Vehicle Type
RN2, Moramanga- Toamasina
RN2, Moramanga-Antananarivo
RN44, Ampitambe- Moramanga
Minimum
of
Weekend/
Weekday
Number
Due to
Project
Total
Pass-bys
per Hour
Minimum
of
Weekend/
Weekday
Change
due to
Project
Total
Pass-bys
per Hour
Minimum
of
Weekend/
Weekday
Change
due to
Project
Total
Pass-bys
per Hour
Construction
private cars
29
0
29
14
0
14
19
1
20
transports for people
(buses)
20
0
20
12
0
12
12
1
13
transports for goods
(trucks)
32
1-2
33-34
20
<1
20-21
14
1-2
15-16
two-wheeled vehicles,
motorized
80
0
80
20
0
20
204
0
204
total
161
1-2
162-163
66
<1
66-67
249
3-4
252-253
Operation
private cars
29
0
29
14
0
14
19
<1
19-20
transports for people
(buses)
20
0
20
12
0
12
12
<1
12-13
transports for goods
(trucks)
32
<1
32-33
20
<1
20-21
14
<1
14-15
two-wheeled vehicles,
motorized
80
0
80
20
0
20
204
0
204
total
161
<1
161-163
66
<1
66-67
249
0-3
249-252
Changes to noise levels on the project access road will depend on the amount of
existing traffic. The amount of project traffic on this road is expected to generate
the same number of noise events as traffic on RN44 – three to four total vehicles
per hour and one to two trucks per hour during construction.
Vibration
The assessment of ground vibration from traffic focuses on large motorized
vehicles (buses and goods transport trucks) only. The primary sources of
vibration from motorized vehicles are:
•
tires striking irregularities in the road surface (impact load); and
