CTA presented its locally preferred alternative at meetings in 2009.
 Phase 3 ran through dense residential areas, so alignment must be considered carefully to avoid adversely impacting those neighborhoods.
Security and safety The CTA rail cars have generally been secure and safe but in addition to general security issues on the CTA, there were calls to improve CTA s emergency response and communications procedures.
 Use of the Midway International Airport Station does not require this higher fare; it only requires the .
Use of North Side lines is heavy and continues to grow, while that of West Side and South Side lines tend to remain stable.
[ The North Side (which has historically been the highest density area of the city) skew no doubt reflects the Chicago building boom between 20, which has focused primarily on North Side neighborhoods and downtown.