The 1985 Navy Relief Air Show, expected to draw more than 500,000 visitors to the Marine Corps Air Station at El Toro next Saturday and Sunday, has base officials preparing for 150,000 cars each day.
A day earlier, on Friday, more than 5,000 special-invitation guests are expected for a dress rehearsal.
Several gate and road closings have been announced, and the Orange County Transit District is planning to operate two shuttle buses to ease traffic.
Buses will leave every 15 minutes from 9 to 10:30 a.m. both days from 6th and Flower streets in Santa Ana and from the Laguna Hills Mall. Return trips will begin at 3:30 p.m. and continue to 5. One-way bus fare is $1.50 for adults, 75 cents for children under 12.
The show begins at 11 a.m.
For those who prefer to drive to the show, directional signs will be posted at the Sand Canyon Avenue exits of the Santa Ana and San Diego freeways. Five parking areas have been set aside for visitors to the show.