Environmental Engineering Reference
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traffic light
sensing
data transferring
camera
optical
receiver
Fig. 14.1
Sensors for navigation at a crossing
increasing
communication
management of fuel
consumption and emissions
training better
drivers
management of
finance and taxes
navigation
controlling health and
safety conditions
management of inspection
and maintenance
avoiding traffic problems
management of tracking
Fig. 14.2
Methods of navigation in road transportation
• As on-board navigation systems in vehicles; see Fig. 14.1 [ 4 ].
Telemetric systems in road transportation intensively include fleet management
and complex technology for optimizing driving, health and safety conditions; see
Fig. 14.2 [ 5 ].
Experience shows that better navigation effectively saves fuel and exhaust gas
emissions. When drivers in Europe travel more than 20,000 km (12,420 mi) a year
in regions with high traffic density and high population, optimal navigation can
save a distance of 2,500 km (1.553 mi) a year [ 5 ]. This equals to approximately
12% of the entire annual fuel consumption. Navigation systems are especially
useful in traffic jams, in that drivers save up to 20% of fuel if they continuously use
information from the Traffic Message Channel [ 6 ].
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