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JTG B01-2014 (JTGB01-2014)

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BASIC DATA
Standard ID JTG B01-2014 (JTGB01-2014)
Description (Translated English) Technical Standard of Highway Engineering
Sector / Industry Highway & Transportation Industry Standard
Classification of Chinese Standard P66
Classification of International Standard 93.080
Word Count Estimation 130,173
Date of Issue 2014/9/30
Date of Implementation 2015/1/1
Older Standard (superseded by this standard) JTG B01-2003
Drafting Organization Ministry of Transport and Roads
Administrative Organization Ministry of Transport - Highway Authoirty
Regulation (derived from) Ministry of Transportation Announcement 2014 years 50
Issuing agency(ies) Ministry of Transport of the People's Republic of China
Summary This Standard applies to new and rebuilt roads.

Standards related to: JTG B01-2014

JTG B01-2014
INDUSTRIAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Technical standard of highway engineering
ISSUED ON: SEPTEMBER 30, 2014
IMPLEMENTED ON: JANUARY 01, 2015
Issued by: Ministry of Transport of People’s Republic of China
INDUSTRIAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Technical standard of highway engineering
Main drafting organization:
Highway Administration Bureau of Ministry of Transport of PRC
CCCC FIRST HIGHWAY CONSTRUCTION CO., LTD
Approved by:
Ministry of Transport of PRC
Date of implementation: January 01, 2015
China Communication Press Co., Ltd.
Chief drafters: Huo Ming, Li Chunfeng
Main participating drafters: Zhou Ronggui, Liao Zhaohua, Guo Tengfeng, Meng
Shutao, Zhang Jinquan, Yu Peiyu, Han Changling, Sun Fuling, Wang Meng,
Wang Jing
Table of Contents
1 General ... 5 
2 Terms and definitions ... 8 
3 Basic requirements ... 9 
3.1 Classification of highways ... 9 
3.2 Design vehicle ... 10 
3.3 Traffic ... 11 
3.4 Service level ... 12 
3.5 Speed ... 12 
3.6 Building boundaries ... 13 
3.7 Anti-seismic ... 16 
4 Routes ... 16 
5 Subgrade pavement ... 24 
6 Bridges and culverts ... 28 
7 Vehicle and crowd loads ... 33 
8 Tunnel ... 37 
9 Route crossing ... 41 
9.1 Level crossing of highway and highway ... 41 
9.2 Three-dimensional crossing of highway and highway ... 42 
9.3 Crossing of highway and railway ... 44 
9.4 Crossing of highway and rural roads ... 45 
9.5 Crossing of highway and pipeline ... 46 
9.6 Animal passage ... 47 
10 Traffic engineering and facilities along route ... 47 
10.1 General provisions ... 47 
10.2 Traffic safety facilities ... 48 
10.3 Service facilities ... 50 
10.4 Management facilities ... 51 
Appendix A Classification of highway service levels ... 54 
Appendix B Stopping sight distance and identifying sight distance of trucks . 57 
Explanation of wording in this code ... 59 
Explanation of Provisions ... 60 
1 General ... 61 
3 Basic requirements ... 66 
4 Routes ... 79 
5 Subgrade and pavement ... 100 
6 Bridges and culverts ... 107 
7 Vehicle and crowd loads ... 116 
8 Tunnel ... 123 
9 Route crossing ... 133 
10 Traffic engineering and facilities along route ... 143 
Technical standard of highway engineering
1 General
1.0.1 This standard was formulated to regulate highway engineering
construction.
1.0.2 This standard applies to newly built, reconstructed, extended highways.
1.0.3 Highway construction shall be based on comprehensive analysis of
regional characteristics, traffic characteristics, road network structure to
determine the function of the highway; the technical level and main technical
indicators shall be selected based on the function in combination with traffic
volume and terrain conditions.
1.0.4 The overall design of a highway construction project shall be well-
performed so that the main project, traffic engineering and facilities along the
route are coordinated and matched with each other, to give full play to their
respective functions and the overall function of the project.
1.0.5 The construction of highways shall implement the principles of protecting
cultivated land and saving land. In determining the scope of highway land, the
following requirements shall be met:
1 The range of highway land is not less than 1 m beyond the outer edge of
the drainage ditch on both sides of the highway embankment (the foot of
the embankment or the slope when there is no drainage ditch), or the outer
edge of the interception ditch on the top of the road (the top of slope when
there is no intercepted ditch). In the segment with conditions, the land
within the range not less 3 m for the expressway and class 1 highway or
not less than 2 m for the class 2 highway is the range of the highway land.
2 When setting up protection and improvement facilities in bad geological
zones such as wind and sand, snow hazards, landslides, mudslides, and
when taking treatment measures in special land zones such as swelling
soil and saline soil, the scope of land use shall be determined according
to actual needs.
3 Land for bridges, tunnels, interchangeable three-dimensional intersections,
separated three-dimensional intersections, level crossings, safety
facilities, service facilities, management facilities, greening, other off-line
projects shall be determined according to actual needs.
1.0.6 Highway construction must implement national laws and regulations on
environmental protection and resource conservation; meanwhile it shall meet
the following requirements:
1 Highway environmental protection shall implement the principle of
“protection first, prevention first, supplemented by governance,
comprehensive management”.
2 Highway construction shall be carried out according to natural conditions,
to carry out greening and beautify road capacity, protect the environment.
3 The construction of expressways, class 1 and class 2 highways and
highways with special requirements shall be subject to environmental
impact assessment and assessment of soil & water conservation
programs.
4 Eco-environmentally fragile areas, or areas where the environment may be
difficult to recover in the near future due to highway construction, shall be
designed for environmental protection.
5 Highway reconstruction and expansion projects shall make full use of
highway waste materials to save engineering construction resources.
1.0.7 The construction of highways in phases must be overall designed in
accordance with the principles of overall planning and implementation in
phases, and shall meet the following requirements:
1 The early-phase projects shall still be fully utilized in the later phases.
2 The integral section of the expressway shall not be constructed horizontally
in sections and stages.
3 Separated section segments of expressways may be constructed in
sections and stages. When the first section is opened to traffic according
to two-way traffic, it shall be managed in accordance with the traffic
conditions of the class 2 highway.
1.0.8 During the reconstruction and expansion of highways, demonstration and
comparison of reconstruction and expansion plans and new construction plans
shall be conducted. When adopting the reconstruction and expansion plan, the
following requirements shall be met:
1 The timing of highway reconstruction and expansion shall be determined
based on the actual service level through demonstration. The service
levels of expressways and class 1 highways should be lowered to be in
front of the lower limit of the level 3 service; the service levels of class 2
and class 3 highways should be lowered to be in front of the lower limit of
the level 4 service. The class 4 highway can be determined according to
specific conditions.
2 When making use of the local segment of the current highways is limited
by the terrain and features, improving the designed speed will induce
engineering geological diseases or greatly increase the construction cost,
or have a great impact on environmental protection and cultural relics, the
design of this local segment may maintain the original design speed; but
the length should be not more than 15 km for expressway and not more
than 10 km for class 1 and class 2 highways.
3 The design of specific implementation plan for the reconstruction and
expansion of the expressway shall be based on the design of the traffic
organization and the evaluation of traffic safety. In the implementation of
the project, it shall reduce the interference with existing roads and there
shall be safety measures to ensure traffic. Maintaining the service level of
the open road section can be reduced by one level; the design speed
should not be lower than 60 km/h.
4 In the reconstruction and expansion of the class 1, class 2, class 3
highways, it shall make a design scheme to ensure smooth traffic.
5 When separated sectional segment of the expressway in desert, Gobi,
grassland and other small-traffic areas uses the existing class 2 highway
to be reconstructed into one section, the design flood frequency can
maintain the original standard; the design speed shall not be greater than
80 km/h.
1.0.9 In the road segments with intensive non-motorized vehicles and
pedestrian, it should consider the traffic needs of non-motorized vehicles and
pedestrians. It may set the non-motorized lanes and sidewalks according to the
traffic composition.
1.0.10 Arterial highways of class 2 and above shall be evaluated for traffic safety
during design; other highways may also be evaluated for traffic safety when
conditions permit.
1.0.11 For the highways of class 2 and below with functional requirements for
disaster relief, it may improve the earthquake resistance and design flood
frequency standards accordingly.
1.0.12 For highway construction projects, it shall, based on the design service
life, comprehensively consider the cost-effectiveness of construction,
maintenance, management, and other social benefits such as safety,
environmental protection, and operation, to select the plan of best
comprehensive benefit.
2 Terms and definitions
2.0.1 Highway reconstruction & extension
On the basis of existing highways, highway construction projects to improve the
technical level, capacity, or technical indicators, including highway
reconstruction and expansion.
2.0.2 Highway function
The vehicle traffic capacity for unobstructed direct travel, pool evacuation and
access as provided by the highway in the highway network. The main arterial
highways and class 2 arterial highways have the function of unblocking and
direct access; the main distribution highways and class 2 distribution highways
have the function of collecting and evacuating; the branch highways have the
function of entering and leaving.
2.0.3 Design speed
Design reference speeds that determine and coordinate highway design
indicators.
2.0.4 Operating speed
Under the flat, wet, free-flowing conditions of the pavement, the speed
corresponding to the 85% quantile on the cumulative speed distribution curve.
2.0.5 Posted speed limit
A limit on the permitted speed of a vehicle running on the highway.
2.0.6 Design vehicle
The representative model used in highway geometric design, whose outline
size, load capacity and dynamic performance are the main basis for
determining highway geometric parameters.
2.0.7 Design traffic capacity
Under the corresponding designed service level, the maximum hourly flow rate
of vehicles passing the highway facilities.
2.0.8 Level of service
The quality indicators of the driver's perception of the operating conditions of
highway traffic flow, which are usually characterized by indicators such as
average driving speed, driving time, driving freedom, traffic delay.
2.0.9 Evacuation / escape lane
A special lane added to the outside of the carriageway for vehicles with brake
failure to leave, decelerate and stop, self-rescue.
2.0.10 Hard shoulder
A band-shaped part connected to the carriageway with a certain pavement
strength. It is mainly used to provide lateral excess width for driving, lateral
protection for pavement structure, full or partial width for emergency stopping
of faulty vehicles.
2.0.11 Design working / service life
Under normal design, normal construction, normal use, and normal
maintenance conditions, the service year of pavements, bridges and culverts,
tunnel structures or structural components for their intended purpose without
major overhaul or replacement.
2.0.12 Electronic toll collection
The fully electronic toll collection method without requiring stopping vehicles by
the use of automatic vehicle identification, referred to as ETC.
3 Basic requirements
3.1 Classification of highways
3.1.1 Highways are divided into five technical classes including expressways,
class 1 highways, class 2 highways, class 3 highways, class 4 highways.
1 The expressway is a multi-lane highway that is designed for vehicles to
drive in different directions and lanes, and all access is controlled. The
annual average daily designed traffic volume of expressways should be
above 15000 passenger cars.
2 The class 1 highway is a multi-lane highway for vehicles to drive in different
directions and lanes. The annual average daily designed traffic volume of
the class 1 highway should be more than 15000 passenger cars.
3 The class 2 highway is a two-lane highway for vehicles. The annual
average daily designed traffic volume of class 2 highway should be 5000
to 15000 passenger cars.
4 The class 3 highway is a two-lane highway for mixed use of automobile
and non-automobile traffic. The annual average daily designed traffic
volume of the class 3 highway should be 2000 to 6000 passenger cars.
5 Class 4 highways are two-lane or single-lane highways for mixed use of
automobile and non-automobile traffic. The average daily designed traffic
volume of two-lane class 4 highways should be below 2000 passenger
cars; the average daily designed traffic volume of single-lane class 4
highways should be below 400 passenger cars.
3.1.2 The selection of highway’s technology class shall follow the following
principles:
1 The selection of highway’s technology class shall be determined based on
road network planning, highway functions, traffic volume through
demonstration.
2 Main arterial highways shall be expressways.
3 Secondary arterial highways shall select class 2 and above highways.
4 Main collective highways should select class 1 and class 2 highways.
5 Secondary collective highways should select class 2 and class 3 highways.
6 Branch highways should select class 3 and class 4 highways.
3.2 Design vehicle
3.2.1 The outline dimensions of design vehicles used in highway design are as
shown in Table 3.2.1.
Table 3.2.1 -- Outline dimensions of design vehicle
Note: The wheelbase of the articulated vehicle (3.3 + 11) m: 3.3 m is the
distance from the first axis to the articulated joint; 11 m is the distance from the
articulated joint to the rearmost axis.
Vehicle types Total length (m) Total width (m) Total height (m) Front suspension (m) Wheelbase (m) Rear suspension (m)
Passenger car
Large passenger car
Articulated bus
Truck
Articulated vehicle
3.3 Traffic
3.3.1 The design traffic forecast of newly constructed and reconstructed
highway projects shall meet the following requirements:
1 The predicted service life at the design traffic for expressways and class 1
highway is 20 years; the predicted service life at the design traffic for class
2 and class 3 highways is 15 years; the predicted service life of the class
4 highways may be determined based on actual conditions.
2 The start year of the predicted service life at the design traffic volume is
the planned opening year in the project feasibility study report.
3.3.2 The traffic volume is converted using a passenger car as the standard
vehicle. The representative models of vehicles and the conversion factor of
vehicles are as shown in Table 3.3.2. The conversion of traffic volume such as
tractors and non-motor vehicles shall meet the following requirements:
Table 3.3.2 -- Representative models of vehicles and vehicle conversion
coefficients
Representative
models of vehicles
Vehicle
conversion factor Descriptions
Passenger car 1.0 Passenger car with seats≤19 and truck with a loading mass≤2t
Middle-sized vehicle 1.5 Passenger car with seats>19 and truck with a loading mass >2t & ≤7t
Large-sized vehicle 2.5 Truck with a loading mass >7t & ≤20t
Combination vehicle 4.0 Truck with a loading mass >20t
1 Non-motor vehicles such as animal-powered vehicles, rickshaws, and
bicycles are calculated as to roadside interference factors.
2 Each tractor driving on the highway is converted into 4 passenger cars.
3 The vehicle conversion factor required for highway capacity analysis shall
be used accordingly based on road sections, intersections, etc., and
according to different terrain conditions and traffic needs.
3.3.3 The hourly traffic volume of highway design should use the 30-th hourly
traffic volume of the year; it may also be selected between the 20-th and 40-th
hourly traffic volume of the local year according to the project characteristics
and requirements.
3.4 Service level
3.4.1 Highway service levels are divided into six levels, as shown in Appendix
A.
3.4.2 The design service level of highways at all levels shall not be lower than
those specified in Table 3.4.2 and shall meet the following requirements:
Table 3.4.2 -- Design service levels of highways at all levels
Class of
highway Expressway Class 1 highway Class 2 highway Class 3 highway
Class 4
highway
Service level Level 3 Level 3 Level 4 Level 4 -
1 When a class 1 highway is used as a collective highway, the design service
level can be reduced by one level.
2 For the long tunnel and extra-long tunnel sections, the non-motorized
vehicles and pedestrian-intensive sections, the converging and
distribution section and interweaving sections of interchangeable three-
dimensional intersections, the design service level can be reduced by one
level.
3.5 Speed
3.5.1 The design speed of highways at all levels shall meet the requirements in
Table 3.5.1. The selection of design speed shall be based on the function and
technical grade of the highway, combined with factors such as terrain,
engineering economy, expected operating speed, the nature of land use along
the route, through comprehensive demonstration. Meanwhile it shall be in
accordance with the following requirements:
Table 3.5.1 -- Design speed
1 The design speed of the expressway should not be lower than 100 km/h.
When it is restricted by terrain and geological conditions, it may select 80
km/h.
2 For the class 1 highway which is used as the arterial highway, the design
speed should be 100 km/h; when it is restricted by terrain and geological
conditions, it may select 80 km/h. For the class 1 highway for collective
Class of highway Expressway Class 1 highway Class 2 highway Class 3 highway Class 4 highway
Design speed
(km/h)
purposes, the design speed should be 80 km/h; when it is restricted by
terrain and geological conditions, it may select 60 km/h.
3 For the specially difficult local sections of expressways and class 1
highways that are used as arterial class 1 highways, when the newly
constructed projects may cause engineering geological diseases, it has
been demonstrated that the design speed of this local section can be 60
km/h, but the length shall not be greater than 15 km, or it is limited only to
the section between two adjacent interchanges.
4 For the class 2 highways which are used as the arterial highways, the
design speed should be 80 km/h; when it is restricted by terrain and
geological conditions, it may select 60 km/h. For the class 2 highway for
collective purposes, the design speed should be 60 km/h; when it is
restricted by terrain and geological conditions, it may select 40 km/h.
5 The design speed of the class 3 highway shall be 40 km/h; when it is
restricted by terrain and geological conditions, it may select 30 km/h.
6 The design speed of the class 4 highway shall be 30 km/h; when it is
restricted by terrain and geological conditions, it may select 20 km/h.
3.5.2 The design of highways shall be checked by operating speed. The
difference between the operating speeds of adjacent sections shall be less than
20 km/h. The difference between the operating speed and the design speed of
the same section shall be less than 20 km/h.
3.5.3 The speed limit of a highway shall be determined comprehensively
through demonstration based on factors such as design speed, operating
speed, roadside interference, environment.
3.6 Building boundaries
3.6.1 The building boundaries of highways at all levels shall meet the
requirements of Figure 3.6.1 and shall meet the following requirements:
a) Expressway and class 1 highway (integral type)
b) Expressway and class 1 highway (separated type)
c) Classes 2, 3, 4 highways
d) Highway tunnels
Figure 3.6.1 -- Building boundaries of highways at all levels
(Dimensional unit: m)
Wherein:
W - Width of carriageway;
L1 - Width of hard shoulder at left side;
L2 - Width of hard shoulder at right side;
S1 - Width of left side strip;
S2 - Width of right side strip;
J or R J or R LLeft LRight
Eleft Eright
L - Lateral width. The lateral width of the class 2 highway is the width of the
hard shoulder. The lateral width of classes 3 and 4 highways is the width of
the shoulders minus 0.25 m. When setting up a guardrail, the roadbed shall
be widened according to the required width of the guardrail;
LLeft - Lateral width of the left side of the tunnel;
LRight - Lateral width of the right side of the tunnel;
C - 0.5 m when the design speed is greater than 100 km/h and 0.25 m when
it is less than or equal to 100 km/h;
D - Curb stone’s height, which is less than or equal to 0.25 m. Under normal
circumstances, highways may not be provided with curb stones;
M1 - Width of middle strip;
M2 - Width of median strip;
J - Width of access road;
R - Sidewalk width;
d - Height of access road or sidewalk;
E - Building boundary’s vertex width, when L ≤ 1 m, E = L; when L > 1 m, E
= 1 m;
E1 - Building boundary’s vertex width, when L1 < 1 m, E1 = L1, or S1 + C < 1
m, E1 = S1 + C; when L1 ≥ 1 m or S1 + C ≥ 1 m, E1 = 1 m;
E2 - Building boundary’s vertex width, E2 = 1 m;
ELeft - Building boundary’s left vertex width; when LLeft ≤ 1 m, ELeft = LLeft; when
LLeft > 1 m, ELeft = 1 m;
ERight - Building boundary’s right vertex width; when LRight ≤ 1 m, ERight = LRight;
when LRight > 1 m, ERight = 1 m;
H - Clear height.
1 Set up acceleration (deceleration) lanes, emergency parking strip, climbing
lanes, passing bays, slow lanes, lane isolation facilities and other sections;
the driving lanes shall include the width of this section.
2 For highways with eight lanes and above (integral type), when setting the
left hard shoulder, the building boundary shall include the width of the left
hard shoulder.
3 The same clear height shall be adopted for one highway. The clear height
of expressways, class 1 highways and class 2 highways shall be 5.00 m;
the clear height of class 3 highways and class 4 highways shall be 4.50
m.
4 When sidewalks, bicycle lanes, access roads are separated from driving
lanes, their clear height shall be 2.50 m.
5 Where subgrades, bridges, and tunnels connect each other, the building
boundaries shall be treated as transition sections.
3.7 Anti-seismic
3.7.1 The seismic design shall meet the following requirements:
1 Highway engineering in areas where the peak acceleration coefficient of
ground motion is less than or equal to 0.05, except for special
requirements, it may adopt simple fortification.
2 Highway engineering in areas with peak acceleration coefficients greater
than 0.05 and less than 0.40 shall be subject to seismic design.
3 Highway engineering in areas where the peak acceleration coefficient of
ground motion is greater than or equal to 0.40 shall be subject to special
seismic study and design.
4 For highway engineering that have been zoned in seismic districts, the
seismic design shall be based on the peak acceleration coefficient of the
ground motion approved by the competent authority.
4 Routes
4.0.1 General provisions
1 The determination of route corridors shall consider the division of labor and
cooperation among various transportation systems and different levels of
road networks in the corridors, so as to make overall planning, near and
long-term integration, reasonable layout, to give full play and improve the
overall comprehensive benefits of the highway.
2 Highway route selection must be from surface to strip and from strip to line.
The route plan must be demonstrated and determined on the basis of
investigations and surveys on topography, geology, hydrology, climate and
meteorology, nature reserves.
3 The alignment of the route shall consider cooperation with farmland, water
conservancy construction, and urban planning. Avoid immovable cultural
relics, water sources, and nature reserves as much as possible, protect
the environment, coordinate with the local landscape.
4 It shall well design the highways as a whole. Correctly handle the
relationship between the highway and relevant highway network and
traffic nodes. Properly set up various types of entrances and exits,
crossings, and structures. The selection and arrangement of various
structures shall be reasonable, practical and economical.
5 The route design shall appropriately select the design speed according to
the conditions of highway function, technical grade, terrain; reasonably
determine the layout form of the highway section; properly use various
technical indicators; pay attention to the combination of horizontal and
vertical alignment; maintain continuous linear alignment, so as to meet the
comfortable, environmental-friendly, economic requirements under the
premise of ensuring driving safety.
4.0.2 The lane width shall meet the requirements of Table 4.0.2 and shall meet
the following requirements:
Table 4.0.2 -- Lane width
1 When the inner lane (inner lanes 1 and 2) of the highways of eight lanes
and above only allows the passage of passenger cars are, the lane width
may use 3.5 m.
2 It is demonstrated that the lane width can be 3.5 m for highways mainly
used for medium and small passenger vehicles with a design speed of 80
km/h and above.
3 When a four-lane highway uses a single lane, the lane width shall be 3.5
m.
4 For class 2 highway with slow lanes, the width of the slow lanes shall be
3.5 m.
5 The width of non-motorized lanes and sidewalks of the highways with non-
motorized lanes and sidewalks should be determined according to actual
conditions.
4.0.3 The number of lanes of highways at all levels shall meet the requirements
Design speed
(km/h)
Lane width
(m)
of Table 4.0.3. The number of lanes of each segment of expressways and class
1 highways shall be determined according to the designed traffic volume and
design capacity. When the number of lanes is more than two lanes, it shall be
increased by double numbers.
Table 4.0.3 -- Number of lanes of highway at all levels
Class of highway Expressway, class 1 highway Class 2 highway Class 3 highway Class 4 highway
Number of lanes ≥ 4 2 2 2 (1)
Note: The class 4 highway shall use two-lanes. The segments with small traffic
or difficulties may use single lane.
4.0.4 The integrated cross-sections of expressways and class 1 highways must
be provided with middle strip. The middle strip consists of a median strip and
two left side strips.
1 For expressways and class 1 highways as arterial roads, the width of the
median strip shall be determined according to the function of the median
strip of the highway project.
2 As a class 1 collective highway, the width of the median strip shall be
determined according to the width of the middle isolation facilities.
3 The width of the left side strip shall not be less than that specified in Table
4.0.4. The design speed is 120 km/h, 100 km/h. For the road segment
limited by terrain and features or the road segment of multi-lane highway
whose inner lane is only allowed for the passage of small vehicles, after
demonstration, the width of the left side strip may use 0.50 m.
Table 4.0.4 -- Width of left side strip
Design speed
(km/h) 120 100 80 60
Width of left side
strip (m) 0.75 0.75 0.50 0.50
4.0.5 The width of the shoulder shall meet the requirements in Table 4.0.5-1;
meanwhile it shall meet the following requirements:
Table 4.0.5-1 -- Shoulder width
Note:
1. Under normal circumstances, it shall use the "general value". When setting up
climbing lanes, speed changing lanes, overtaking lanes, the road segments
limited by terrain, features, and other conditions, the ultra-large bridges for multi-
lane highways, through demonstration, it may use the “minimum value”.
2. When expressways and class 1 highways as arterial routes are mainly used for
passenger cars, the width of the right hard shoulder can adopt the value in
parentheses.
1 Expressways and class 1 highways shall have a right side strip within the
width of the right hard shoulder; its width is 0.50 m.
2 When expressways and class 1 highways adopt separate cross-sections,
it shall set up the left hard shoulder. The width shall not be less than the
value specified in Table 4.0.5-2. The width of the left hard shoulder
includes the width of the left side strip.
Class of highway (function) Expressway Class 1 highway (artery function)
Design speed (km/h)
Width of left hard
shoulder (m)
Width of soil
shoulder (m)
General value
Minimum value
General value
Minimum value
Class of highway (function)
Design speed (km/h)
Width of left hard
shoulder (m)
Width of soil
shoulder (m)
General value
Minimum value
General value
Minimum value
Class 1 highway
(collective functions) and
class 2 highways
Class 3 highway and
class 4 highways
0.25 (double-lane)
0.50 (single-lane)
Table 4.0.5-2 -- Width of left shoulder of expressway of separated cross-
section and class 1 highway
Design speed
(km/h) 120 100 80 60
Width of left hard
shoulder (m) 1.25 1.00 0.75 0.75
Width of left soil
shoulder (m) 0.75 0.75 0.75 0.50
3 The left hard shoulder should be provided on highways with eight lanes
and above; the width shall not be less than 2.5 m. The width of the left
hard shoulder includes the width of the left side strip.
4.0.6 When the width of the hard shoulder on the right side of expressways and
class 1 highways as arterial roads is less than 2.50 m, it shall set up an
emergency parking strip. The width of the emergency parking belt shall be 3...
...