Permits to supply international remunerated passenger road transport services can only be granted only to enterprises whose capital was at least 60% owned by Central American nationals. This restriction has been lifted as of 13 December 2019 due to amendments to the Executive Decree No. 41404-MOPT on Regulations for international public paid collective transport of persons (TIPC).
"Article 1-This regulation regulates the general provisions applicable to the services of International Public Transport Paid Collective of Persons (TIPC), regardless of whether the authorization has been issued by the Public Transport Council or by foreign public bodies.
Article 2-In the TIPC service, the TIPC International Line (LI) is understood to be that service in which at least one of the terminal points (origin or destination) is located outside the national territory, or when such service transits through it , using it as part of its route, in which case these LIs must be subject to the conditions of this regulation, even if they do not have terminals in the national territory.
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Article 13.- To operate a TIPC service, the permit granted by the Public Transportation Council is necessary, in accordance with the requirements established in the Law of Traffic on Public Land Roads and Road Safety, Law No. 9078 and its reforms, the Central American Agreement on Road Circulation and these regulations. 
Article 14.- The permission referred to in article 13 may be granted to national or foreign companies. In the latter case, the provisions of Articles 226, 227 and those consistent with the Costa Rican Commercial Code, Law No. 3284, must be complied with.[...]" (Executive Decree No. 41404-MOPT on Regulations for international public paid collective transport of persons (TIPC) (10/19/2018), as amended by Executive Decree no. 42072 of 10/15/2019 effective from 12/13/2019, Articles 1, 2, 13 and 14 [google translation])
Executive Decree No. 41404-MOPT on Regulations for international public paid collective transport of persons (TIPC) (10/19/2018), as amended by Executive Decree no. 42072 of 10/15/2019 effective from 12/13/2019, Articles 1, 2, 13 and 14
[<a href="http://www.pgrweb.go.cr/scij/Busqueda/Normativa/Normas/nrm_texto_completo.aspx?param1=NRTC&nValor1=1&nValor2=90232&nValor3=118737&strTipM=TC">Decree</a>]