Related Rule
Mexico
Practice Relating to Rule 29. Medical Transports
Section A. Respect for and protection of medical transports
Mexico’s Army and Air Force Manual (2009), in a chapter on the 1949 Geneva Conventions, states: “The mobile medical units of the parties to the conflict in the field and fixed medical establishments must be respected and protected at all times. Vehicles used to transport the sick and wounded and medical supplies must be treated in the same way as mobile medical units.” 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, § 75.
In a section on the 1949 Geneva Convention I, the manual also states:
94. … mobile medical units of the medical service must not be attacked under any circumstances and must be respected and protected at all times by the parties to the conflict.
100. Land vehicles used for medical purposes (medical transports) must be respected and protected in the same way as mobile medical units.
101. Military medical vehicles that fall into the hands of the adverse party are subject to the laws of war, provided that the party to the conflict that captures them ensures the care of the wounded and sick being transported in them. 
Mexico, Manual de Derecho Internacional Humanitario para el Ejército y la Fuerza Área Mexicanos, Ministry of National Defence, June 2009, §§ 94 and 100–101.
Mexico’s IHL Guidelines (2009), in a section entitled “Basic rules of conduct in armed conflict”, states: “Do not attack medical vehicles … Ensure their protection. 
Mexico, Cartilla de Derecho Internacional Humanitario, Ministry of National Defence, 2009, § 14(i).