| Subject | English | Spanish |
| transp. | a light is operated and kept in service by a keeper able to intervene at once in case of need | Luz vigilada |
| transp. | in service survey | revisión de los vehiculos en circulación |
| mater.sc. | in service survey | revisión de los vehículos en circulación |
| polit. | in service training | formación en servicio |
| polit. | in service training Any vocational training acquired during employment. Do not confuse with IN PLANT TRAINING | formación en servicio |
| comp., MS | place in service date | fecha de puesta en servicio (The date that an asset is ready and available for service) |