Law enforcement agencies from around southern Nevada will be combining forces in hopes of making roads safer.

The Southern Nevada Traffic Task Force announced Tuesday plans for a saturated enforcement area along two stretches of freeway in the Las Vegas valley.

Officers from the Nevada Highway Patrol, Metro Police, North Las Vegas and Henderson Police will be out in force Wednesday, patrolling along U.S. 95 from the Spaghetti Bowl to Lake Mead Boulevard and along I-15 from Lake Mead Boulevard to Russell Road.

Officers will be looking for drivers who are following to closely, speeding, changing lanes unsafely, using a cell phone or driving while distracted.

"We are going to take on a zero tolerance mentality with all of our officers, which are going to be patrolling throughout this area, looking for the different violations which we have noted to be accident causing," NHP trooper Loy Hixson said.

LAS VEGAS -- A woman is facing charges after leaving the scene of a fatal crash involving a pedestrian over the weekend.

Elizabeth Meza, 33, of Las Vegas surrendered to Metro Police Sunday evening. The crash occurred Saturday at 11 p.m. According to police, the pedestrian was crossing Jones Boulevard at the intersection of Saddle Avenue and was struck by a Nissan. The driver left the scene, but police located the abandoned car a short distance away.

The pedestrian was transported to the hospital but died about one hour later.

Meza faces one count of duty to stop at the scene of an accident and one count of failure to yield/exercise due care to pedestrian.

LAS VEGAS -- A judge agreed Friday morning to let an independent lab review blood samples taken from Gary Hosey Jr., the driver who crashed into a bus stop killing four people last September.

The deadly crash happened in the early morning at a bus stop near Spring Mountain Road and Decatur Boulevard. Hosey appeared in Clark County District Court in a black jumpsuit with his hands shackled around his waist. His DUI trial was supposed to start next month but has been postponed.

There has been debate over Hosey's blood test results and whether he was over the legal limit at the time of the crash. One blood test done two hours after the crash showed Hosey's blood level at .06. Prosecutors said blood alcohol levels decrease over time and Hosey's blood alcohol content could have been above the legal limit of .08 at the time of the incident.

Prosecutors also allege Hosey did test above the legal limit for marijuana.