HAPMS Documentation
Source: data.gov.uk (2026-01-05)

Highways England Pavement Management System Network Layer HAPMS. P-AMS replaced HAPMS in spring 2023. The network layer produced here is taken from P-AMS and formatted into the HAPMS schema. The data is designed for use as a pavement system no responsibility is accepted for the misuse or misinterpretation of this data. "Pavement" refers to the road surface, and not pedestrian access.

This data covers the majority of the Highways England road network - Trunk roads, motorways and other types of roads that Highways England is responsible for maintaining. It can be used to indicate the extent of Highways England's responsibility.

27th April 2017 
 
 
 
Registered office Bridge House, 1 Walnut Tree Close, Guildford GU1 4LZ 
Highways England Company Limited registered in England and Wales number xx-xxxx-xxxx 
 
Highways England Open Data 
 
Dataset Name: Highways England Pavement Management System 
Layer 
Type: Geographic Information System (GIS) Data 
 
Background 
 
Highways England Pavement Management System, HAPMS, is used to manage the 
paved roads that Highways England is responsible for. 
The HAPMS dataset can be used as a representation of the roads managed by 
Highways England. 
 
The data is derived from both GPS data and OS 1:10,000 basemapping. It is 
maintained by Highways England support staff and service providers. 
 
HAPMS roads are formed of sections. Section lengths vary between a few metres and 
several kilometres. 
 
Dual carriageways are attributed as “nominated” or “not nominated” – this is to avoid 
duplicating of assets positioned between the carriageways, e.g. a sign would only be 
allocated to the road section which is “nominated”. 
 
Metadata 
 
Please see the UK GEMINI metadata available at the Data.gov.uk website. 
 
Schema 
 
Field Name 
Description 
class_name 
The  road class: M, A(M) or A 
roa_number 
The  road number e.g. M1, A6, A1M 
sect_label 
A label for the section e.g. 4700M1/280 
location 
A free text field describing the section’s location e.g. SB entry 
from Lofthouse RBout to merge with WB Exit link 
start_date 
The start date for the section 
s_end_date 
The end date for the section 
sec_length 
Recorded length of the section 
funct_name 
The section  function: Main Carriageway, Ox Bow Lay-by, 
Roundabout or Slip Road 
area_name 
The name of the operational area responsible for the section 
e.g. Area 7, M25 DBFO 
direc_code 
The direction: NB, SB, EB, WB, CW, AC or ND (no direction 
has been indicated) 
perm_lanes 
The number of permanent running lanes 

 
 
 
 
 
27th April 2017 
 
 
 
Registered office Bridge House, 1 Walnut Tree Close, Guildford GU1 4LZ 
Highways England Company Limited registered in England and Wales number xx-xxxx-xxxx 
 
dual_name 
Whether the section is dual or single: Dual Carriageway 
(nominated), Dual Carriageway (not nominated), One Way 
Single, Two Way Single, Not Specified 
envir_name 
The environment: Rural, Urban, Suburban 
autho_name 
The name of the local authority e.g. Cornwall, City of 
Portsmouth 
reference 
A plan reference used by the Service Provider 
 
Notes: 
1. The data are entered and maintained by the Service Providers. 
2. A section is uniquely identified by Section Label and Section Start Date. 
3. A “live” section will normally have a Section End Date of 01-Jan-3000.