You've probably noticed - prices at the pump are creeping higher. According to GasBuddy-dot-com, the national average rose to 3-dollars and-68-cents a gallon. That's about 15 cents higher than the same time last year. Channel 4's Kumasi Aaron tells us why and what you can expect as you make your summer plans. 3 0-518-2223-26116-121 Karen Carter cringes ... As she watches her tank swallow up her paycheck... 51:04 KAREN CARTER: "it stops us from doing a lot of things that we used to do. We used to just get in the car and drive wherever and now it's just like maybe let's just not go there, it costs too much it's not worth it."Many reasons are responsible for the rise... AAA attributes it to lower gas inventories, coupled with a release of pent-up demand after a rough winter. International issues also play a role - including the Ukraine- Russia crisis and tensions in the Middle East... And a lingering deadline for U.S. refineries to switch over from winter to summer blends of gasoline...Which means more drivers may put the brakes on summer plans ... 46:44 Well I might just have to behave myself a little more and save a little bit more money because it's going to be expensive." 47:58 LATORIA LUNDY: "when i can afford to pay $75 to fill it up i do and that's here and there."Carter is already taking a detour on her daily route... 51:33 KAREN: "i'm not filling the car up i'm only putting a little bit in so i can get to the other side of town."