The average price of a gallon of regular is now $3.87, the highest recorded price in March. The average price is up nearly 4 cents from a week ago, and over 30 cents from a year ago, according to the Department of Energy, as more drivers face gas prices of $4 a gallon or more across the country.

Last week, the average gas price was $3.83 a gallon, the previous record according to data going back to 1990.

The West Coast was once again the most expensive region with an average gas price of $4.23, up almost 2 cents from last week, with an increase of over 37 cents from  a year ago.

The least expensive was the Rocky Mountain region with $3.62 a gallon. That region had the highest increase from last week, 14 cents, while the average price there climbed almost 24 cents from a year ago.