Honk wouldn’t bicycle on a freeway, but sometimes you legally can

Q. A small group of us annually ride our bikes from Rancho Mission Viejo to Oceanside, going through Camp Pendleton. We have lunch and then take the Amtrak train back – a fun day. Some of the guys do not like riding through the Marine base, because there are no designated bike lanes, etc., so they want to ride along the I-5 Freeway. Please comment on the rules associated with riding bikes along this stretch of the I-5, an option that looks scary to me. My bike-riding friends and I are look