Nice catch, 26.375 MHz 26375 kHz is a popular freeband 11 meter frequency for general free band CB operators and truckers. I usually check 26.585 MHz AM as that seems to be the most popular Mexican trucker frequency.
Along with 26.585 MHz AM and 26.375 MHz AM, other popular ones include
27.455 MHz USB - calling frequency for Latin America / Caribbean
26.555 MHz LSB - calling frequency for Latin American / Caribbean
26.540 MHz LSB - working frequency, active when 26555 LSB is very busy
26.570 MHz LSB - QSY / working frequency, see 26.555 LSB
26.500 MHz USB - QSY / working frequency, see 26.555 LSB
26.500 MHz LSB - QSY / working frequency, see 26.555 LSB
26.225 MHz USB - calling frequency for SSB activity, very busy in Mexico and Latin America in general
26.935 MHz AM
26.725 MHz AM - High power radios, similar to 27.025 AM - Puerto Rico, Latin America
26.715 MHz AM - High power radios, similar to 27.025 AM - Puerto Rico, Latin America
26.705 MHz AM - High power radios, similar to 27.025 AM - Puerto Rico, Latin America
26.695 MHz AM
26.615 MHz AM
26.605 MHz AM
26.595 MHz AM
26.585 MHz AM
26.405 MHz AM
26.385 MHz AM
26.305 MHz AM
26.275 MHz AM
26.105 MHz AM