Driver’s Manual | 69 Class B and C mopeds can be driven only  in the right lane of traffic, as far to the right as  possible. Class A mopeds are allowed to drive in  any lane and any section of a lane. Mopeds are  not permitted on expressways or other controlled  access highways unless posted signs permit it. When you approach a moped, use the same  precautions you would when you approach a bicyclist. In more than 60 percent of all fatal crashes that  involve cars and big trucks, the car driver, not the  truck driver, contributes to the cause of the traffic  crash. Four out of five times, it is the car driver  who is killed. Many of these crashes could be prevented if  motorists know about truck (and bus) limits and  how to steer free from situations that are unsafe  and involve large vehicles. Different from cars, large vehicles have deep  blind spots behind them. They also have larger  blind spots on both sides. Tractors with long  hoods can have a blind spot of 20 feet in front of  the vehicle. You should avoid these “no zones.” Large vehicles have large blind spots on both  sides. If you drive in these blind spots, you cannot  be seen by the driver. Even if the driver knows  you are there, if you remain next to the vehicle,  it can make it difficult for the driver to avoid a  dangerous situation. other driver cannot see your car and your view of  other traffic will be blocked.  Large vehicles take much longer to stop than  smaller vehicles  that travel at the  same speed. For  tractor trailers, the  difference comes  from brake delay.  Air brakes use  compressed air  to transmit brake  power to all the  wheels. Compressed  air takes longer to  transmit the brake  power than hydraulic  brakes, and this can  add many feet to the  distance it takes to  stop. Leave plenty of  space between your  car and the truck. If  you are in front of a  truck, indicate your  intention to turn or  change lanes early.  Do not make sudden moves.  Large trucks, recreational vehicles and buses  are not big cars. The bigger they are: If you remain in the back blind spot of a large  vehicle, you increase the chance of a crash. The  Side Blind Spots Blind Spots in Back • The bigger their blind spots. • The longer it takes them to stop. • The more room they need to maneuver. • The longer it takes for an automobile to pass them. LARGE VEHICLES Distance to Stop Ability to Maneuver Large vehicles are not as maneuverable as cars.  They take longer to stop and to accelerate and  they often need to move wide to make their turns.  You can reduce the chance of a collision with a  large vehicle if you: • Do not cut abruptly in front of the large ve- hicle; when you exit, take a few additional  seconds to decrease speed and exit behind  it; when you pass, do not pull in front of it  unless you can see the whole front of the  vehicle in your mirror. • Pay close attention to the turn signals.  Because trucks make wide right turns, they  move to the left before they turn right. Look at the turn signals.