Their swift and coordinated actions are a testament to the strength of the planning, joint exercises, and operational arrangements that we have developed together for the A55 and all our tunnels.
Mae eu hymateb cyflym a threfnus yn dyst i gryfder y trefniadau cynllunio, cyd-ymarfer a gweithredu yr ydym wedi'u datblygu gyda'n gilydd ar gyfer yr A55 a'n holl dwneli.