level crossing warning signal usa crossbuck notice and red traffic light rail road intersection california railway |
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| navigate by keyword : abstract alarm alertness america arm attention automated azure barrier blue california caution classic construction crossbuck crossing crossroad crosswalk danger driveway electric flash forbidden gate guarding information infrastructure intersection junction lamp level light metaphor pedestrian pillar precaution rail railroad railway red road safety security semaphore sign signal signpost states station stop symbol track traffic train transit transportation trip united urban usa warning |
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| Level crossing warning signal in USA. Crossbuck notice and red traffic light on rail road intersection in California. Railway transportation safety symbol. Caution sign about hazard and train track |
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