Amends existing law to provide that speed limits for vehicles with five or more axles operating at a gross weight of more than 26,000 pounds shall be the same as for other vehicles.

Differential speed limits, most often in the form of forcing heavy trucks to travel slower than passenger cars, increase traffic turbulence, leading to higher crash risks due to increased interactions. Research has shown that speed variance (differences in speed between vehicles) causes more accidents than absolute speed, with a 10 mph difference creating a much as a 227% increase in interactions. When variances in speed occur at excessivespeeds, suchasoninterstatehighways, theseverityofcrashesincreasesdramatically. Thislegislation eliminates differential speed limits on state highways.