Updated 8 p.m.
The SigAlerts established for slowed traffic on both sides of Interstate 15 in Temecula will not expire until 11 p.m., towing officials said.
Two crashes in less than an hour backed up traffic for miles through Temecula, authorities said.
The first crash was reported at 5:22 p.m. on the northbound Interstate 15, north of Old Town Front Street, when three vehicles and a trailer being towed by one of them collided -- demolishing the RV, the CHP said.
A SigAlert regarding that crash was to stay in effect until close to 10 p.m., authorities said.
To read about that crash, please click
The second crash was reported at 6:05 p.m. on the westbound Temecula Parkway, between La Paz Road and Wabash Lane, according to Cal Fire.
According to Cal Fire Capt. Barry Owens, there were four people -- two of them children -- who suffered minor injuries and were taken to local hospitals.
Three people in a Chrysler Town and Country minivan -- a woman and two children -- were injured, and one occupant of a Honda Civic was also hurt, Owens said.