STGO stands for Special Types General Order.
STGO is the abbreviation that appears on the plate on the front of Heavy Haulage tractor units, to indicate what weight Category they are licensed for operation at. There are three "Categories"; Cat 1, Cat 2 and Cat 3
| Class | Gross weight | Axle limit | Speed | Notes |
|---|---|---|---|---|
| Cat 1 | 46 ton | C&U regs | 60 mph motorway | HGV (LGV) Normal limits for road type |
| Cat 2 | 80 ton | 12.5 ton | 40 mph Motorway 35 mph on Dual Carriageways |
30 mph on other |
| Cat 3 | 150 ton | 16 ton | 30 mph Motorway 25 mph on Dual carriageways |
20 mph on other roads attendant required dependant on size of load |
| Movement Order Required | 150 ton plus | 16 ton | - | application to Highways Agency 8 weeks in advance, with designated route proposal, Notice to Bridge owners, utilities and LAs |
| Oversize loads also need Movement order, Police can grant exemption for regular movements on a designated route, i.e Modular buildings or combines (Escort vehicles required) | ||||
| Form | Width | Length | Attendant needed | police / Highways Agency Notice |
| VR1 | 5 m- 6.1 m | <27.4m 0/A | Depends on Overhangs | Police |
| BE16 | 6.1m + | 27.4m + | Yes | yes both |
| A). Based on Info in Classic Plant & Machinery Magazine Vol3 No. 2, B). HMSO Construction and use regulations | ||||
This is a general guide and current regulations should be checked.
Note: Competent operators will be able to advise. If a potential haulier can not give a clear answer to questions you are probably safer to contact another haulier with the relevant expertise if you have oversize loads to move. Moving out sized loads is a job for experts, as the consequences if it goes wrong can be fatal.