Environmental Engineering Reference
In-Depth Information
41.0
26 t
40 t
36.0
31.0
26.0
21.0
16.0
73
75
77
79
81
83
velocity [km*h ]
-1
Fig. 14.3 Fuel consumption of mixed driving on country roads and highways depending on
speed and load
50
foresighted driving
aggressive driving
40
30
20
10
0
0
50
100
150
200
250
time [sec]
Fig. 14.4
Differences between travelling with and without foresight
14.1.3 Convoy Travel with Heavy-Duty Vehicles
The average speed on highways is decreasing worldwide because traffic is gen-
erally becoming denser. For this reason, the automatic regulation of the driving
speed on highways effectively saves fuel and exhaust gas emissions. One possible
way is to structure heavy-duty vehicles into a convoy on the highway so that they
drive in a line with automatic regulation without drivers except for the first vehicle
[
10
].
Besides saving fuel, this system also contributes to the optimal use of the
highway's capacity. The vehicles following behind the convoy would also save
fuel; see Fig.
14.5
[
11
].
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