to a clock p.m. on i-85 in atlanta, congestion could be more than twice the normal. coming home again on sunday, try to avoid driving from 4:00 p.m. until 8:00 p.m. the key is to be conscious of leaving at a reasonable time where you know traffic should be a little bit better. it is not going to be light, it s not going to be great but it should be better. reporter: traffic, one of the top concerns for drivers is the cost of gas. patrick dehaan of gas buddy says a little bit of planning goes a long way with prices on average $0.35 higher than a year ago. s and crossing the border from arizona and california, gas prices can spike by more than $1.00 per gallon. of motorists are taking to the road for road trips, i would advise him to shop around. they could be leaving low gas prices behind or, the low gas prices could be right in front of them. one more warning about driving. airports are worried they may run low on parking spaces. you can probably tell because of the grant we a