10 East to the 405 (Centinela to National), 5-7 pm
During evening rush hour, traffic drops to 11 mph at Centinela Ave. approaching the 405. But the worst shift has occurred just after the interchange to Overland, where average speeds have dropped by more than half in five years.
110 North to the 10 (Florence to Washington), 7-9 am
As morning commuters approach downtown at Florence, traffic drops to 16 mph and bottoms out at Vernon, at an average of 13 mph. Between 51st and Vernon, average speed has declined by almost 40% since 2012.
110 South to the 10 (Amador to Washington), 5-7 pm
Average speeds approaching the 101 and 10 interchanges are down almost 30% to 45% in five years, to a low of 18 mph at both Stadium and Washington.
405 North to the 105 and the 90, 7-9 am
Traffic just north of the 105 interchange used to zip along at almost 50 mph before slowing to approach the 90. Now average speeds there have fallen by more than half, and stay mostly in the teens until north of the 90.
405 South to the 101 (Sherman Way to Burbank Blvd.), 7-9 am
South of Burbank Blvd., average speeds slow to 10 mph approaching the 101 interchange. Further north, the worst drop-off occurs at Victory Blvd., where average speed plunged by two-thirds since 2012.
405 South to the 10 and the 90 (Palms to Jefferson), 5-7 pm
The 10 and 90 interchanges make this stretch a challenging zone. At their worst, average speeds at Venice Blvd. have declined 45%, from nearly 30 mph down to 15 mph. Traffic throughout this stretch stays in the high teens and low 20s.