To that end, their characteristics, such as maximum size, weight and emission characteristics, should be specified at Union level in a proportionate way for local deployment and to ensure a high level of protection of public health, as laid down in Recommendation 1999/519/EC.
Chun na críche sin, ba cheart na saintréithe a ghabhann leo — amhail uasmhéid, meáchan agus saintréithe astaíochta – a shonrú ar leibhéal an Aontais ar bhealach comhréireach le haghaidh imscaradh áitiúil agus chun ardleibhéal cosanta a áirithiú don tsláinte phoiblí, mar a leagtar síos i Moladh 1999/519/CE.