Nearly 30 years after the ADA, the nation’s transit agencies report successes and shortfalls

Scott Crawford hasn’t driven a car in 20 years. A retired clinical neuropsychologist, Crawford relocated from Miami to his hometown of Jackson, Miss., in 2006, seven years after developing primary progressive multiple sclerosis. When his illness put him in a wheelchair, the bus became his lifeline, that is, when it didn’t leave him behind, which happened often and sometimes still does.