(1) Structural improvements such as width, gradient, paving and visibility
(2) Installation of safety devices such as warning devices and automatic barriers
(3) Prohibition of automobile passage through level crossings with little road traffic volume or elimination of these crossings
(4) Grade separation
As a result of these policies, whereas 3,500 accidents occurred at the 70,000 level crossings throughout the nation in 1960, these figures had been reduced to 40,000 level crossings and 500 accidents by 1994. (See Fig. 8 and 9.)
