Translate the following English sentence to French:
"Action is needed on three fronts: first, by taking legislative, regulatory action, secondly, by promoting new technologies in vehicles and in the road infrastructure and, thirdly, by taking administrative action and running an information campaign."
Nos actions devront s' articuler autour de trois axes : un, interventions législatives, réglementaires ; deux, promotion de nouvelles technologies en matière de véhicules et d' infrastructures routières ; trois, mesures administratives et campagne d' information.