Wash all vegetables thoroughly.
Slice cucumbers, carrots, and radishes.
In a saucepan, combine vinegar, water, sugar, and salt, and heat until dissolved.
Let the mixture cool slightly.
Add dill seeds and smashed garlic to the brine.
Pack the sliced vegetables into sterilized jars.
Pour the brine over the vegetables, ensuring they are submerged.
Seal the jars and let them cool to room temperature.
Refrigerate for at least 24 hours before enjoying.