ABS light comes on steady. on 2005 Kia Sedona

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
when I drive and hit 60mph my ABs light comes on steady, why is this and is it dangerous?
(1) Answer
Could be speed sensor, when the light comes on you have no ABS brakes.
The base brakes will still work but I would get it check by a lic tech