Look twice, because once is never enough. May is Motorcycle Awareness Month, and as the warm weather draws out more riders to share the roads and highways, it's crucial to watch out for motorcyclists to reduce deadly crashes. For the third year in a row, Allstate's "Once is Never Enough" (ONE) program is reminding drivers that awareness saves lives. The insurance company's campaign aims to standardize warning signs for motorcycle safety across the nation.

Allstate's motorcycle safety efforts have garnered the support of comedian and actor Bill Engvall, who's known for his Here's Your Sign routine on the Blue Collar Comedy Tour. Engvall, an avid motorcyclist, has joined Allstate to create a video highlighting motorcycle safety and awareness. The video explains how the ONE program works, with Allstate teaming up with local traffic authorities to identify dangerous intersections. Signs are then donated and installed at these locations.

Allstate's yellow, diamond-shaped sign was temporarily displayed at 140 intersections in 2010 and 2011, and this year, the program will expand. The first permanent installation of the Watch for Motorcycles signs took place in Atlanta on May 1, 2012, and additional signs will be installed in other cities around the country.

Throughout the month of May, Allstate is encouraging the public to take the ONE Pledge, committing to look twice at intersections and spread the message to at least one other person. For each pledge that is shared on Facebook, Allstate will donate $1 toward the creation and installation of additional Watch for Motorcycles signs.

According to the National Traffic Safety Administration, nearly half of all multi-vehicle crashes occur at intersections, often as a result of a vehicle turning left into a motorcyclist's path. In addition to the signs, Allstate's safety tips for drivers include allowing for greater following distance, and being aware of common motorcyclist driving behaviors. Don't assume that motorcyclists are speeding, and remember that they often adjust position within a lane to be seen more easily by motorists.

Get more motorcycle safety tips at Allstate.com.