The modular ramp needs to be researched first.
The picture shows where the objects are located.
Linking to railway crossings. It is symmetrical.
Possible combinations of individual objects.
Ramp - height 1 and 6, single and double center. 
Ramp - height 2, single center, double center, single, double and triple 
Ramp - height 3, single center, double center, single, double, triple and rails 
Ramp - height 4, single center, double center, single, double, triple and electrified rails 
Some objects were left in the planned state for better clarity.
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