People from small Texas towns (Louisiana too) and no big city driving experience still know what "feeder" roads are.

You can still throw them way off giving directions if you tell them to get off the freeway at Frontage Road, especially with a French Cajun accent ;)

Loads of exits in all locations and directions have a lone sign at the ramp simply saying "Frontage Rd." pointing at the exit.

You have to look at a sign miles earlier to know what exit it really is.