Are they not required to comply with driving time trackers?
From https://ec.europa.eu/transport/modes/road/social_provisions/...:
"Daily driving period shall not exceed 9 hours, with an exemption of twice a week when it can be extended to 10 hours."
Unfortunately not for the smaller vans. In your link they mention:
> road haulage and passenger transport vehicles,
which "road haulage" I'm pretty sure means the regular big lorries we all think about. But when driving a Mercedes Sprinter [1] the same rules don't apply. You can actually drive that Sprinter with a regular driver's license, while for a regular lorry you need to take additional exams so that you can get into the "you can drive a lorry/big truck" category.
[1] https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/20...
But a lot of door-to-door delivery these days uses "independent contractors" who use their personal vehicles and fuel, and get paid e.g. £120 for 180 deliveries.
Nobody's enforcing digital tacho cards for people's personal vehicles.