On my way back to Johor Bahru or Singapore on the Northsouth Expressway, I use the Skudai R & R which is 1km from the Skudai toll - the last toll gate before the JB CIQ (immigration).
Skudai R & R Southbound
Address: 8, Jalan R&R Skudai, Kawasan R & R Skudai, 81400 Senai, Johor
Tel: +6016 255 7293
Hours: 24 hours 24/7