FHA

In 2009, the Federal Highway Administration (FHA) awarded Solar Roadways a contract to construct a prototype.

The FHA will continue to collect insurance premiums from borrowers during a shutdown as well.

But a shutdown could also seriously impact FHA's ability to police lenders and loan quality.

Lenders with "delegated authority" will be able to go on making FHA loans.

"The FHA program can weather a shutdown as long as it doesn't last too long," said Guy Cecala of Inside Mortgage Finance.