Specifications include, but are not limited to: SEPTA is seeking the replacement of its Market Frankford Line Subway Cars with the goal of assembling the procurement documents for this project. SEPTA is seeking input from experienced vehicle manufacturers. ; SEPTA is planning to procure a new fleet of subway cars to operate on the Market-Frankford Line, SEPTA’s transit route with the highest ridership. This is SEPTA’s first procurement of subway cars since the late 1990s, so SEPTA is interested in learning from the industry’s advancements over this period. ; 1. Please identify any individual requirements that you believe pose a significant constraint on vehicle design or cost. Please identify design alternatives to these requirements that would help SEPTA achieve its strategic goals with the M5 fleet. 2. Please identify any individual requirements that you believe pose a significant constraint on car weight. Please identify design alternatives to these requirements that would help SEPTA achieve its strategic goals with the M5 fleet. 3. Do any of the degraded-performance requirements in the specification pose an undue burden on car design? More broadly, how do you plan to meet the degraded-performance requirements in the specification?