170 IAC 4-3-6 Choice between specific coordination methods; pertinent factors

Sec. 6. Choice Between Specific Methods. When specific co-ordinated methods are necessary and there is a choice between specific methods, those which provide the best engineering solution should be adopted. (a) The specific methods selected should be such as to meet the service requirements of both systems in the most convenient and economical manner without regard to whether they apply to supply systems or signal systems or both. (b) In determining what specific methods are most convenient and economical in any situation for promoting safety or preventing inductive interference, all factors for all facilities concerned should be taken into consideration, including present factors and those which can be reasonably foreseen. (c) In determining whether specific methods, where necessary, shall be wholly by separation or partly by methods based on less separation, the choice should be such as to secure the greatest present and future economy and convenience in the rendering of both services.