All road signs
IS2aDirection sign for approach to a road for motor vehicles (straight ahead, left or right)
IS2bDirection sign for approach to a road for motor vehicles (straight ahead, left or right)
IS2dDirection sign before a slip road to a road for motor vehicles (straight ahead, left or right)
IS2eDirection sign before a slip road to a road for motor vehicles (straight ahead, left or right)
IS2fDirection sign before a slip road to a road for motor vehicles (straight ahead, left or right)

IS2cInformative sign
IS2c Direction sign for approach to a road for motor vehicles (straight ahead, left or right)
Gives the direction to the marked destination or destinations using a road for motor vehicles.
In Czech
The exam is in Czech, so it is worth knowing the Czech name. Below is the official text from Czech law, which is not translated.
Směrová tabule pro příjezd k silnici pro motorová vozidla (přímo, vlevo nebo vpravo)
Značka informuje o směru k vyznačenému cíli (cílům) s využitím silnice pro motorová vozidla.
Příloha č. 5 k vyhlášce č. 294/2015 Sb., ve znění vyhlášky č. 205/2025 Sb.
Similar signs
IS2aDirection sign for approach to a road for motor vehicles (straight ahead, left or right)
IS2bDirection sign for approach to a road for motor vehicles (straight ahead, left or right)
IS2dDirection sign before a slip road to a road for motor vehicles (straight ahead, left or right)
IS2eDirection sign before a slip road to a road for motor vehicles (straight ahead, left or right)
IS2fDirection sign before a slip road to a road for motor vehicles (straight ahead, left or right)