What are five ways to inform base populace about roadway construction?

a) Social Media, Radio, TV, Newspapers, Flyers
b) Smoke Signals, Carrier Pigeons, Drum Beats, Semaphore, Telegrams
c) Morse Code, Heliograph, Semaphore Flags, Signal Fires, Whistle Signals
d) Podcasts, Billboards, Skywriting, Carrier Pigeons, Flash Mobs