It was a case of on-again, off-again for the Rimutaka Hill Rd yesterday, with snow forcing cars to wait at both ends yesterday morning.
The road was reopened briefly at about 10.30am but closed after heavier falls began blanketing the upper levels and the pass.
It was reopened from noon.
At 4pm yesterday, The NZ Transport Agency advised motorists the road would be open sporadically and road crews would be there to assist.
Heavy snow falls of up to 20cm are forecast at the summit of the road, building from yesterday morning. At the time of press, NZTA operations manager Mark Owen forewarned the road was likely to be closed overnight Tuesday as temperatures dropped causing snow and ice.