Portion of USDOT Secretar Sean Duffy’s letter to CTA. Those who support cash bail say it keeps people behind bars who might otherwise be out committing crimes. Images police say show the sexual assault suspect at the Howard Street CTA station and on the Yellow Line train. Whatever the legalities and consequences of cashless bail, however, there is public worry over safety on the CTA. UPDATE: 3:49 p.m. Evanston Now has received the following statement from CTA:“The CTA is in receipt of a letter from U.S. Transportation Secretary Sean Duffy.