april 2001 us department of transportation bureau statistics introduction page i highlights this month specially flagged trends ii summary social and economic characteristics iii system extent v indicators safety 1 mobility 18 growth 37 human natural environment 86 national security 93 report is intended to provide timely easily accessible information for decisionmakers it was developed by the bts dot updated each on website www gov community indicator placed under a heading corresponding one five strategic goals some are related more than goal fall two broad categories those that context about economy society in which func tions convey an aspect possible these latter transporta tion
