U.S. imports of Parts of Electrical Signaling & Traffic Control Equipment (SITC 77883) totaled $16.7M in August 2026, imported from 39 countries.
Importers of Parts of Electrical Signaling & Traffic Control Equipment paid $1.6M in duties in August 2026, an average duty rate of 9.75% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataReplacement modules, sensor assemblies, control cards, and housings for railway, road, waterway, and port safety systems are captured here when they are identifiable as parts of the signaling and control equipment in the parent heading. Because these parts support safety-critical infrastructure, procurement decisions often prioritize certified OEM sources over lowest-cost alternatives, and documentation of part provenance is important for both customs classification and end-use compliance. Importers should be prepared to demonstrate that parts are specifically designed for signaling or safety control applications rather than general-purpose electrical use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
930 import shipments a month
OEM part numbers, engineering drawings referencing the parent signaling system, and a manufacturer's statement of principal use are the most effective supporting documents. If the component is a standard commercial item (e.g., a generic relay or connector) also used in non-signaling applications, CBP may challenge classification here, making principal-use evidence especially important.
Yes — parts used in federally funded transportation infrastructure projects (including rail and highway) may be subject to Buy America requirements under the Federal Transit Administration, Federal Railroad Administration, or the Infrastructure Investment and Jobs Act. These requirements are separate from customs classification and duty obligations, and importers supplying government contractors should confirm compliance with the relevant program's domestic content rules.
Basic heading 359 of 642 in section 7
Basic heading 77883 · $16.7M of $172.0B
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Imports · August 2026
origin
Malaysia and Mexico together supply 42% of it. China pays 36.0% duty; Canada <0.1%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$16.7MYoY · free account
Exports
$6.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $177.9M of Parts of Electrical Signaling & Traffic Control Equipment.
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.