"RIM's decision to remove these apps from their online store proves that when it comes to drunk driving, there should not be an app for that," said Sen. Charles Schumer (D-NY), one of the four lawmakers, in a statement Wednesday.

At least one app has disappeared from the BlackBerry App World.

On Tuesday, Sens. Harry Reid (D-Nev.), Schumer, Frank Lautenberg (D-NJ) and Tom Udall (D-NM) asked Apple, Google and RIM to from their mobile app markets.

RIM is the first of the three operating system makers to confirm that it's removing applications from their online marts.

The senators had problems with apps that include alerts of upcoming sobriety checkpoints, a feature in some programs that also warns drivers of user-reported speed traps, roving radar-equipped patrol cars and recent accidents. Many of the apps integrate a smartphone's built-in GPS to display police and accident locations.