PubSafe offers users the ability to identify is transportation assistance is needed. The reason assistance is needed is not collected to avoid HIPPA (personal medical information in the USA). Users in need of transportation assistance may be contacted by non-government organizations support a disaster or government officials as part of a public service program.
Transportation assistance is not a guarantee of service, or a replacement for a government program, unless specifically stated by local government officials. PubSafe is a data augmentation tool for other data sources and systems.
If assistance is to be provided (not guaranteed), it is likely that you would receive a call to confirm your location, type of assistance, and special needs.