A report was issued from the National Weather Service on Sunday at 6:55 a.m. for dense fog until 9 a.m. for Western Chester, Eastern Chester, Western Montgomery, Eastern Montgomery, Upper Bucks and Lower Bucks as well as Delaware and Philadelphia counties.

"Areas of dense fog have developed. Morning motorists should exercise caution and watch for rapidly changing visibility. The fog should dissipate towards mid-late morning," says the weather service.

Fog safety: Tips from the weather service for safe travels

If you must drive in foggy conditions, keep the following safety tips in mind:

Moderate your speed:

Slow down and allocate extra time for your trip to reach your destination safely.

Visibility priority:

Ensure your vehicle is visible to others by using low-beam headlights, whic

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