Metric 1: VMT identifies stress on freight corridors
VMT continues to be one of the most critical indicators of corridor health, and Altitude’s ongoing truck parking study with HNTB and Caltrans showcases how planners can use this granular data. Caltrans has noted that Altitude will be a valuable resource for highway calibration and validation, particularly for understanding how to reduce VMT on overloaded corridors.
By tracking VMT trends, your team can pinpoint where traffic is outpacing infrastructure and capture the early evidence needed to justify capacity upgrades or preservation projects. And because the data is corridor-specific, it can directly support competitive funding applications, including Trade Corridor Enhancement Program (TCEP) grants.
Metric 2: Slowing speeds detect real and emerging bottlenecks
Freight often slows down significantly long before it shows up in congestion and bottleneck rankings. Speed degradation metrics reveal early bottleneck indicators by showing where freight slows down, when those slowdowns occur, whether delays are spreading or intensifying and which vehicle types are affected.
These metrics help planners distinguish between a momentary slowdown and a developing structural problem giving you a head start on mitigation before the issue surfaces in crash data or public complaints.
Metric 3: Origin & Destination patterns show true freight behavior
Not all congestion is caused by local freight. Altitude’s Origin & Destination analysis shows where freight ultimately begins and ends, revealing:
- Whether a corridor is serving through-traffic
- Which alternate routes could absorb demand
- Whether mode-shifting or port rebalancing is viable
- Which bottlenecks have the highest impact across the network
For example, a recent analysis of Florida’s I-75 corridor shows that most of that corridor’s long-haul freight trips bypass Atlanta by routing westward.

Figure 1: An Origin and Destination analysis of freight travel along Florida’s busy I-75 corridor reveals options for potentially shifting cargo to alternate modes.
This insight indicates that mode-shifting those trips to rail may offer a more viable relief strategy than pushing freight toward Southeastern ports including Savannah or Charleston. This is the type of actionable intelligence planners need to craft realistic multimodal solutions.