I cross the Causeway 4x/week for supply runs. Reality check: • Best crossing time: 5-6am or 11pm+, otherwise 45min-2hr wait • Get MyTag transponder — cuts 10 mins on return • Woodlands checkpoint faster than Tuas for CIQ • Bring ringgit AND SGD — some kopitiams don't take card • RM3 charge JB side, S$4 SG side per car Happy to answer specifics about the trade route.