Recently found Google map providing live traffic feeds. You can simply click the URL link to check it out.

Live traffic from Singapore Woodland checkpoint to Johor CIQ

Live traffic from Johor CIQ to Singapore Woodland checkpoint

Future enhancement including live traffic cameras on causeway would be good.

https://www.google.com.sg/maps/place/Johor+Causeway,+Bandar+Johor+Bahru,+80300+Johor+Bahru,+Malaysia/@1.4557954,103.768222,17z/data=!3m1!4b1!4m2!3m1!1s0x31da12e6b8740b15:0xed31a894b75ff70c!5m1!1e1