One of the basic requirements in traffic engineering is to control the speed of various categories of vehicles over roads for the safety of road users. Various categories of roads are designed under different situations for designated design speeds over which vehicles can travel with convenience and safety. The use of road humps in city streets is an efficient way of controlling speed of automobiles. This paper describes a study conducted to establish practical geometric design guidelines of speed control humps for the use of road engineers. A statistical relationship between geometric characteristics of speed control humps and speeds of the automobiles is developed and models have been suggested for the use of practicing engineers. This relationship can be used as a tool for designing hump geometry for a particular hump-crossing speed. One of the important features of the study is the development of a simple procedure for the road hump design.