A singlespeed el bike is a type of bike with a single gear ratio. These singlespeed el bikes are without derailleur gears, hub gearing or other methods for varying the gear ratio of the bike.
There are many types of modern singlespeed el bikes; BMX singlespeed el bikes, most single speed designed for children, cruiser type bikes, classic commuter bikes, unicycles, singlespeed el bikes designed for track racing, fixed-gear road bikes, and single-speed mountain bikes.
The fixed-gear bike is the most basic type of bike. A fixed-gear bike does not have a freewheel mechanism to allow coasting.