Parts of Suffolk could experience dense fog under a new yellow weather warning.
The Met Office has said travel delays are likely due to dense fog settling on the east.
The warning was in place from 4am and is set to last until 9am.
The region has been issued with several warnings over the last few weeks for rain and has a warning in place on Sunday for gale force winds and heavy rainfall.
Ipswich, Haverhill, Stowmarket and Sudbury are the areas covered in the warning that could experience fog.
The Met Office said: "Areas of fog, including some dense patches reducing visibility to less than 100 metres at times, will impact travel during the morning rush hour.
"Fog will, however, slowly lift and clear through this morning."
Drivers are advised to give themselves extra journey time, checking their fog lights work and amending plans if necessary.
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