Can a car with a trailer use a HOV lane?

A)Yes, if it is occupied by a minimum number of people.
B)No.Correct
Generally, two- or three-wheeled motorcycles, cars, buses with a maximum authorized mass exceeding 3,500 kilograms, articulated buses, and adaptable mixed vehicles with the number of occupants set per section may circulate in the BUS-HOV lane.
The rest of the vehicles and combinations of vehicles, including cars with trailers, cycles and mopeds, are prohibited from circulating.
However, they may also be used, even when only the driver is in them, by:
-The types of vehicles authorized if they display the V-15 sign (reduced mobility distinctive).
-By two- or three-wheeled motorcycles.
-By buses with a maximum authorized mass exceeding 3,500 kilograms and articulated buses.
-By vehicles classified as taxis according to the criteria of use in Annex II of the General Vehicle Regulations, which have an exterior light module and a current taxi license.
-By police, fire, civil protection, rescue and emergency medical assistance vehicles, equipment for the maintenance of the installations and infrastructure of the road.
-By cars with V-25 environmental distinctive sign classified in the Vehicle Registry of the Autonomous Body Central Traffic Headquarters as «0 emissions».
-By cars with V-25 environmental distinctive sign classified in the Vehicle Registry of the Autonomous Body Central Traffic Headquarters as «ECO», «C» or «B», only when the variable message panels for access to HOV lanes indicate this.
The rest of the vehicles and combinations of vehicles, including cars with trailers, cycles and mopeds, are prohibited from circulating.
However, they may also be used, even when only the driver is in them, by:
-The types of vehicles authorized if they display the V-15 sign (reduced mobility distinctive).
-By two- or three-wheeled motorcycles.
-By buses with a maximum authorized mass exceeding 3,500 kilograms and articulated buses.
-By vehicles classified as taxis according to the criteria of use in Annex II of the General Vehicle Regulations, which have an exterior light module and a current taxi license.
-By police, fire, civil protection, rescue and emergency medical assistance vehicles, equipment for the maintenance of the installations and infrastructure of the road.
-By cars with V-25 environmental distinctive sign classified in the Vehicle Registry of the Autonomous Body Central Traffic Headquarters as «0 emissions».
-By cars with V-25 environmental distinctive sign classified in the Vehicle Registry of the Autonomous Body Central Traffic Headquarters as «ECO», «C» or «B», only when the variable message panels for access to HOV lanes indicate this.