WASHINGTON, D.C. — Lawmakers in six states are currently pushing legislation to adjust speed limit protocols, a move that could significantly change daily operations for any OTR truck driver navigating regional corridors. From Michigan to New York, state houses are debating shifts in how maximum speeds are calculated and enforced on limited-access highways.
These legislative efforts often target the 85th percentile rule, a long-standing standard for setting speed limits based on the speed at which 85% of traffic flows. The push to refine these rules comes as states look to modernize traffic management, often citing the need to align local regulations with the realities of modern vehicle capabilities and highway design. For the professional driver, these changes represent a fluctuating landscape of compliance that varies wildly from one state line to the next.
Michigan House Bill 4012 seeks to grant local officials more discretion by allowing them to set speeds within 5 mph of the 85th percentile, while simultaneously removing the requirement for expensive engineering and safety studies. New Jersey’s Senate Bill 1652, introduced by Sen. Declan O’Scanlon, aims to standardize the use of the 85th percentile formula to limit subjective interference by local authorities. Meanwhile, New York is weighing bills S2209 and A5044 to bump interstate speeds to 70 mph, and North Carolina is considering a 75 mph threshold for specific routes. These follow recent shifts in Montana, which empowered its Transportation Commission to adjust speeds, and Texas, which implemented variable speed limits based on traffic flow and engineering data.
What This Means for Drivers
Constant fluctuations in speed limits across state lines create significant headaches for dispatchers and drivers trying to maintain consistent ELD logs. An owner-operator must remain hyper-aware of these localized changes to avoid unnecessary citations that can impact a CSA score. Trucking companies are hiring, but professional drivers must prioritize route planning tools that account for these evolving state-by-state speed limit updates to ensure both safety and operational efficiency.
Industry Reaction
The Owner-Operator Independent Drivers Association continues to advocate for a standardized, unified approach to speed limits for all vehicles on the road. By keeping all traffic moving at the same pace, the association argues that roadways become inherently safer and more predictable. While many states focus on raising limits, the industry remains wary of the potential for increased speed differentials between heavy-duty trucks and passenger vehicles, which remains a primary safety concern for the trucking community.
Key Points
- Michigan’s HB 4012 proposes removing the mandatory engineering and safety study requirement for local speed limit changes.
- New York is considering an increase to 70 mph on interstate highways to match regional standards.
- Texas has moved toward variable speed limits that adjust based on real-time traffic conditions and engineering investigations.
- North Carolina is evaluating a 75 mph speed limit for specific roadways, contingent on state DOT approval.
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