The United States House Transportation Committee recently heard a transportation bill that would allow larger, heavier trucks on the road. While representatives of business and the trucking industry support the bill, many safety advocates worry that increasing size and weight limits could lead to more dangerous truck accidents.

The bill would allow trucks to grow to 110 feet in length (more than five times the length of a passenger car) and weigh up to 97 thousand (in some cases, even 126 thousand) pounds. Current federal limits are 105 feet in length and 80 thousand pounds.

The bill's supporters - notably a trucking industry looking to increase payloads in the face of a driver shortage - argued that adding an extra axle would protect roads from being damaged by the extra weight. They also dismissed concerns that larger trucks are more dangerous to other motorists. They added that states would have the final say on trucks' weight limits and the federal bill would just increase states' options.

On the other side, many motorists already feel threatened by the presence of large, heavy trucks on highways. Public opinion polls have consistently shown strong public opposition to increasing truck sizes and weights. Recent focus on trucker fatigue and distracted driving only adds to these concerns.

In addition to safety risks, the bill's opponents also worry about the nation's roads, especially in smaller towns, which could be torn up if weight limits are raised. The increased strain on roads would require more state transportation funding in a time when budgets are already tight.

More importantly, damaged roads pose additional risks to motorists. Potholes, uneven roads and strained bridges are all dangerous to drivers and expose municipalities to liability if they cause an accident.

The Committee heard these concerns, amending the bill to require a three-year study to determine the impact of larger, heavier trucks on infrastructure, finance and safety. For the time being, motorists can count on size and weight limits remaining the same.

Source: Washington Post, "Lawmakers debate effects of longer, heavier trucks on highways," Ashley Halsey III, Feb. 02, 2012