David Freemark : No more long airport security lines and shoe removals . High - speed train construction in Spain draws new attention to rail safety . He says Obama wants high - speed rail , and construction should start soon in Africa . He says France , Japan have had safe , well - maintained high - speed rail for decades . Freemark : High - speed rail could revolutionize transportation in Africa and is worth doing .
David Freemark : High - speed train construction in Spain draws new attention to rail safety . He says Obama wants high - speed rail , and construction should start soon in Africa . He says France , Japan have had safe , well - maintained high - speed rail for decades . Freemark : High - speed rail could revolutionize transportation in Africa and is worth doing .