Railroad grades are measured in the percentage of rise over distance traveled; a rise in elevation of one foot per 100 feet traveled would be a 1% grade (see Figure 1). Among prototype railroads, this would be a steep grade for all but those railroads traversing tall mountain regions. As ...
PROBLEM TO BE SOLVED: To provide a road surface grade calculating method that can accurately calculate gradient on a road surface during travelling in two- and four-wheel drive vehicles and is applicable to the four-wheel drive vehicle.NAKAO YUKIO...
According to an embodiment of the present invention, the apparatus for calculating a road grade using the G-sensor comprises: a data detection unit detecting data for calculation of the road grade; a navigation apparatus outputting road information in accordance with the location of the vehicle; ...