There are extra checks on these roads:
N224 (between Zeist, Woudenberg and Renswoude)
N228 (between De Meern, Montfoort and Oudewater)
N415 (between Baarn and Hilversum)
N421 (between Houten and Bunnik)
N458 (between Woerden and Bodegraven)
Stuartweg in Vianen
Atomic Road in Utrecht
Vogelweg/Safariweg in Maarssen