1. Widen the Woodlands causeway by reclaiming land on both sides, triple the no. of lanes and booths.
2. Add third road link.
3. Higher pay to attract more custom officers.
4. Special pass like macs for foreigners invested in MY with a few lanes catering just for them so they can just scan like touch n go card at the tolls.
But this will only happen if Sg govt can really benefit from their investments in Iskander.
Yes many ways if the authorities really want to do it. May be there is no political will to really do something about it.
Here are my suggestion.
1 ) Economical union with Malaysia like the EU
2 ) JB or Iskandar declared special economic zone so less checks unless to go out of the zone.
3 ) More automation like special pass and card on both sides. The authorities can then use camera or random inspection to check for any illegal imports.
4 ) Ferry link but can take in cars and buses.
5 ) 3 link or via duct over the current causeway but with CIQ further in like the 2nd link same for Singapore. May be the singapore CIQ can be at Kranji or where the MRT station is proposed.
But obviously the fastest fix will be to improve the operation at the current CIQs.