Late-night train horns are disturbing neighbors in the west metro. A remedy could cost millions.

Late-night train horns are disturbing residents in Edina and St. Louis Park, prompting studies to create quiet zones by upgrading train crossings. The estimated costs are $10 million for 16 crossings in St. Louis Park and $7 million for seven crossings in Edina. Federal law requires horns at crossings that do not meet safety standards, and funding for upgrades remains unresolved.