Nosiri, Onyebuchi ChikezieAgbaka, Gloria EzinneAgubor, Cosmos NkemdirimAkande, Akinyinka Olukunle2026-05-112026-05-112017-04Nosiri, O. C., Agbaka, G. E., Agubor, C . N. & Akande, A. O. (2017). An embedded voice activated automobile speed limiter: A design approach for cars. International Journal of Engineering Science Invention, 6(4), 47-55e-2319 – 6734p-2319 – 6726www.ijesi.orghttps://repository.futo.edu.ng/handle/20.500.14562/2750This article contains table and figuresThe paper presents an improved design feature for conventional automobile speed limiters installed on cars used in Nigerian. The feature introduces an embedded voice activated prompt command system. The system was primarily designed to alert the Driver through a voice activated command when the speed of the car accelerates from 80km/hr to 95km/hr at an interval of 5km/hr. This became necessary to avoid abrupt jerking of the car at the maximum speed limit of 100km/hr and also functions as informative to the driver when attempts are made on unsafe movements such as inadequate/wrong calculated overtaking. Components such as resistors, diodes, transistors and relays were implemented in the design. Arduino UNO was used as the main controller of the system. Softwares such as Multisim and Proteus 8.5 professional were incorporated in the design with the use of C programming language for codes development. Algorithm was developed to enhance adequate system control. The simulated system demonstrated satisfactory performance based on the design specificationsenAttribution-NonCommercial-ShareAlike 4.0 InternationalAutomobile speed limitervoice activated prompt commandarduino UNOproteus 8.5 professionalmultisimDepartment of Electrical and Electronic EngineeringArticle