Source: ITU/BDT Tariff Policies Survey.
3.6.2 Mutual agreements or regulation enforcements
The question here is related to the level of intervention at the time given by the regulator to mediate specific conflicts arising from infrastructure sharing. The more detailed the regulations on infrastructure sharing, the more waivers will be granted to promote sharing arrangements.
Based on question 12 of the Questionnaire on tariff policies, the answers given by countries show that most of the regulators intervene somehow in sharing arrangements only when agreements cannot be reached by the companies (ex post regulation), supported by the regulation framework established.
The most interventionist countries are Switzerland and Trinidad and Tobago, which present a more detailed regulatory framework on infrastructure sharing. At the intermediate level of intervention we can include Hong Kong (China), Brazil and Malaysia, which have less detailed regulation on infrastructure sharing. Costa Rica and Zimbabwe state that there are no specific regulations governing infrastructure sharing and/or that they only follow (in case of mediation being necessary) sharing agreements freely negotiated by companies.