Visibility studies of symbols used for traffic and pedestrian control lanterns /

Eitemau Tebyg

• Traffic control devices and highway visibility /
  gan: National Research Council (United States). Transportation Research Board
  Cyhoeddwyd: (1992)
• Manual on traffic control devices : traffic signs/
  gan: Malaysia. Kementerian Kerja Raya. Jabatan Kerja Raya
  Cyhoeddwyd: (1980)
• Manual of traffic control devices : standard traffic signs /
  gan: Malaysia. Kementerian Kerja Raya. Jabatan Kerja Raya
  Cyhoeddwyd: (1985)
• Manual on traffic control devices : standard traffic signs /
  gan: Malaysia. Kementerian Kerja Raya. Jabatan Kerja Raya
  Cyhoeddwyd: (1985)
• A comparison of road traffic signal controllers using simulation techniques
  gan: 2526 Pak Poy and Associates
  Cyhoeddwyd: (1975)