The Mobile Accessible Pedestrian Signal System (PED-SIG) is an innovative approach to pedestrian safety, especially catering to those with visual or mobility impairments. Traditional pedestrian signals rely on visual or, to some extent, auditory cues to inform pedestrians when it's safe to cross the street. However, these might not be sufficient for all users, particularly those with disabilities.  Maryland introduced the PED-SIG system, an application enabling automated calls from the smartphones of visually impaired pedestrians to traffic signals. It also provides audio cues to aid in safely navigating crosswalks. PED-SIG can provide unoptimized crosswalk cues for the visually impaired and allows them to use traffic signals more safely and effectively.

In this study, cost estimations were carried out for planning purposes only. Specifically:

• The unit cost for a V2X roadside unit per intersection along signalized corridors was estimated as $26,000.
• The signal controller cost for each V2X unit per intersection along signalized corridors was estimated as $10,000.
• The fiber optics cost per mile was estimated as $158,000.