126,002 At-Grade Rail Crossings Require Mandatory Stops for Hazmat Trucks in the US

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Under 49 CFR 392.10, vehicles carrying placarded hazardous materials, cargo tanks, or passengers must come to a complete stop within 50 feet of any at-grade rail crossing before proceeding. Out of 162,284 public rail crossings in the US, 126,002 are at grade, meaning a mandatory stop is legally required at each one, while 36,282 grade-separated crossings carry no such obligation. Data platform Road511 has integrated the federal highway-rail grade crossing inventory into its routing API, flagging every at-grade crossing as a critical warning for hazmat-configured truck profiles citing the relevant federal rule. Notably, around one in five crossings carries no warning-device code, and nearly half of those with a code are passive-only — such as crossbucks or stop signs — making the driver's stop the final safety control. For dispatchers planning placarded runs, the system calculates mandatory stop counts ahead of departure, helping build realistic schedules rather than treating compliance as an afterthought.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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