translate English to French: Based on its review of the existing costs to date, CN should be responsible for: - $3,500 per year for signal maintenance, and an upgrade every 20 years; - minimal crossing maintenance costs, and an upgrade every 20 years; and - an accident risk factor of $1,000 per year.
En outre, le CN estime que ce projet vise précisément à permettre aux automobilistes de la rue 50 d'accéder plus facilement à la route Yellowhead/route 16, qui doit elle aussi être étagée.