11.   Gas prices rise in late May because the Memorial Day holiday marks the advent of the vacation driving season, when demand starts rising faster than supply.

12.   Government forecasters are not the only ones expecting a hot vacation season this year.

13.   However, the approach of the vacation season is likely to mean lower trading levels and flat trading, they said.

14.   It appeared to be weaker in the United States, where the vacation season is spread over a longer period, the researchers found.

15.   Japan is in the heart of its summer vacation season, a paralyzing ritual of mobbed airports, train stations, and roadways.

16.   Its presence has extended the local vacation season from the traditional three summer months to six months or more, brokers say.

17.   Just in time for the peak vacation season.

18.   Just in time for vacation season, this celebration of the adventurous and a vicarious journey to Alaska, Hawaii and Utah provide a pleasurable excursion into escapism.

19.   Mader said the response to the letters was meager because they were mailed at the start of the vacation season and never got careful attention.

20.   Maybe it is just vacation season, but the government-run Parknet site is getting as overrun as Yosemite.