Yes, unlike the DarsGo distance based toll system for heavy vehicles (> 3.5t), the e-vignette is a flatrate toll and can be used (within its validity period) for an unspecified:
- Driven kilometers
- Border crossings
- Amount of journeys
Related articles:
What is the DarsGo system (distance based toll)
Can I drive into Slovenia without an e-vignette if I avoid motorways and expressways?
Can I drive until the first exit on the motorway in Slovenia without a vignette?
What different types of the Slovenian motorway e-vignette are available?
Does the e-vignette include tunnels like the Karavanke tunnel?