may 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 20 growth 39 human natural environment 87 national security 93 report is intended to provide timely easily accessible information for the community it was developed by bts dot updated each on website www gov 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 wide scope however apply only part
