Changes

When heading north (A2 and/or A73) it's allright to start with a simple "A2" sign. A great onramp to find a next ride is A2 exit Urmond (taken also by all drivers heading for Sittard). A sign again won't be of help there as drivers are bound for Roermond or Eindhoven there (and all could drop you at the upcoming service stations, A2 Shell Swentibold or A2 Esso Bosserhof).

At the crossing of "Nieuwe Limmelderweg" and A79 there is an onramp very suitable for hitchhiking due to great visibility. Tzuiop waited three times no longer than 15 minutes (all early in the morning 8-10AM) Many people who work at Heerlen companies like Brightlands and APB commute. Cons: 4.7km from the city center. Link to the spot: https://goo.gl/maps/ybrfLxx44kqZunqBA