On the electric signal direction indicator for teh control of road traffic

  • M U Onuu
  • P I Nkanu


An electronic signal direction indicator (ESDI) for the control of road traffic has been designed, constructed and studied. The construction was done using 555 timer IC, a transistor-transistor logic compatible device that can operate in several modes as the major active element. The ESDI system circuit is reliable, satisfactorily operational and meets the standards of World\'s Insurance Institute for Highway Safety as experimental results are in good agreement with those obtained from theory.

Keywords: Electronic signal direction indicator, road traffic, highway safety

Nigerian Journal of Physics Vol. 18 (1) 2006: pp. 67-72

Journal Identifiers

eISSN: 1595-0611