Kate Ascher : After deadly train derailment in U.S. , people lament state of New York rail system . Ascher : Technology that might have prevented accident is being deployed on freight lines . Ascher : Does any of this mean we should be complacent when an incident as tragic as Sunday 's happens ? Horrific rail crashes in France , China , Spain show high-tech is n't safer . More investment wo n't make trains completely safe , she says . It wo n't stop human error .
Kate Ascher : After deadly train derailment in U.S. , people lament state of New York rail system . Ascher : Technology that might have prevented accident is being deployed on freight lines . Ascher : Horrific rail crashes in France , China , Spain show high-tech is n't safer . More investment wo n't make trains completely safe , she says . It wo n't stop human error .