| 21. | The tram signals are usually operated alongside and in conjunction with traffic signals.
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| 22. | In essence, it was the audio equivalent of a traffic signal.
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| 23. | Construction also included adding a traffic signal on Tualatin Valley Highway.
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| 24. | Delfzijl provides bicycle paths and traffic signals for pedestrians and cyclists.
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| 25. | Many pictures of historical traffic lights appear at a Traffic Signal Trivia page.
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| 26. | The bus creeps along, stops an instant for a traffic signal and disintegrates.
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| 27. | Almaty turned off about 100 of its 270 traffic signals early last week.
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| 28. | Roundabouts also save money on maintenance and energy for traffic signals, Retting said.
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| 29. | There he was hanged from the metal arm of a traffic signal tower.
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| 30. | Garrett A . Morgan developed the first automatic traffic signal and gas mask.
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