What is kingpin to rear axle length?

So, from the kingpin to the center of the rear axle can be no more than 40 feet in length.

What does kingpin to rear axle mean?

The state of California requires all tractor-trailer combinations to meet the King Pin to Rear Axle (KPRA) law. The center of the rear axle on all trailers must be at the 40-foot mark or shorter and must not weigh over 34,000 pounds on the trailer axles.

How is kingpin measured?

kingpin to center of single axle or center of tandem the over length kingpin is measured from the kingpin to the rear of the trailer or overhang. If the kingpin is over 50′ the vehicle or load is over length and needs a permit.

What is kingpin setting?

The kingpin setting is the distance from the center of the fifth wheel connection to the center of the rear axle group., and affects the turning radius of the vehicle. The longer the kingpin setting, the larger the turning radius.

What is the maximum length of a trailer from the kingpin to the rear of trailer?

Included in laden length ‘LL’ Rear overhang (ROH): 60% of ‘S’ dimension or 3.7 metres, whichever is the lesser Rear overhang limit (ROHL): 4.9 metres when laden ‘S’ dimension: 9.5 metres Kingpin to rear (KR): May exceed 12.3 metres if the semi-trailer is operating under the ‘Class 3 Semi- Trailer Exemption Notice 2012’ …

What is the kingpin distance?

Are 53 foot trailers allowed in California?

Exceptions – STAA Vehicles (1) The length of the semitrailer in exclusive combination with a truck tractor does not exceed 48 feet. The semitrailer is not more than 53 feet in length, with two or more rear axles and a maximum 40′ KPRA, or with a single axle and a maximum 38-foot KPRA.

What is a kingpin on a tractor trailer?

The nipple at the front of a semi-trailer to connect to a fifth wheel coupling on a tractor unit is also known as a kingpin, which usage is analogous to the original horse-drawn wagon and traction engine steering use.

What is a trailer kingpin?

A King Pin is a round steel shaft attached to the front of a fifth wheel trailer and the fifth wheel hitch on the truck clamps around it. Most 5th wheel trailers come with the king pin already mounted to the trailer. Follow the link to view our selection of King Pins.

How far can a load overhang a trailer?

California. California allows cargo to overhang a vehicle by 4 feet beyond the rear, 3 feet beyond the front and 4 inches beyond the side of the vehicle. You must use markings if the load extends 1 foot or more to the left or over 4 feet to the rear of any vehicle.