Road safety audit of Black spot audit

This report presents the road safety audit findings of two black spots and respective
suggesting rectification measures of black spots identified by the Ministry of Road Transport
& Highways (MoRTH) on National Highways NH-30 in the state of Bihar. Regional office –
NHAI directed to carryout road safety audit of black spot at Y junction 193.15 – 193.6 and
Massouri Mode km 188.46 to 189.00 as identified by State Government of Bihar as
mentioned below.
The entire road section passes through Plain terrain. The location of the project road is as
below:
The following black spots have been audited:

S. Latitude /
Black Spot Chainage
No. Longitude

Massouri More to RPS BH-(02)-5 25.585315°,

1 188.460 – 189.00
School round about 85.187734°
New bypass Karmali BH-(02)-3 25.570599°,
2 193.150 – 193.6
chak 70 feet to west 85.249176°

Accident Data of the Black spots:

S. Black Spot ID Number of Accidents Number of Fatalities

Location
No. 2016 2017 2018 Total 2016 2017 2018 Total
BH-(02)-5 Massouri More
1 to RPS School 3 0 9 12 3 0 6 9
round about
BH-(02)-3 New bypass
2 Karmali chak 13 10 7 30 7 4 3 14
70 feet to west
1. AUDIT OBSERVATIONS AND RECOMMENDATIONS

1.1. Black spot 1: Massouri More to RPS School round about on NH-30 (Ch. 188.46 to 189.00)

This black spot location is situated between Ch. 188.46 to Ch. 189.00 of NH-30. And having a built-up area between. It is observed that stretch
has both side ribbon development of commercial and habitation. The location situated at flyover approach end having congestion and chaos.
The stretch has mixed traffic condition due to habitation area.

S. No Safety Concerns & Audit Findings Recommendations

1. Flyover junction approach is just ending at 430m from the Massouri • Short Term Measures
mode black spot which creates congestion due to substantial • Lane marking and road signs are recommended to be installed at
conflicting traffic and leads to jamming condition. (Refer Photo A). priority basis for night time delineation and to follow lane discipline.
• Parking for Autos and Buses to be explored in the vicinity to avoid
2. Faded lane marking and missing road signs near flyover approach. congestion on main road.
Dust covering the shy line along the drain.(Refer Photo B, C) • Road Studs on the flyover required to be installed to alert the driver
3. The autos and taxis are parked at the flyover and bus stops for during the night.
boarding and alighting of passengers. (Refer Photo E) • Information Sign for “Accident prone zone” required to be provided.
S. No Safety Concerns & Audit Findings Recommendations
4. High tension lines are crossing the main carriageway. (Refer Photo • Long Term Measure
D) • It is recommended to explore grade separation at 188+890 with
Encroachments just at the vicinity of junction could be seen extending the existing flyover with additional via duct which will reduce
obstructing the visibility of the drivers. Hiding the road signs. (Refer conflict of through traffic
Photo E) • General Maintenance
• It is to be ensured that street lights are in working condition.
• Minimum vertical clearance of the high tension lines from MCW FRL to
be checked.
• The road dust alongside carriageway are required to be removed for
better clear zone to the drivers.
Reference: Black Spot Images of Massouri More to RPS School round about on NH-30 (Ch. 188.46 to 189.00)

Photo : A Photo : B Photo : C

Photo: D Photo: E
 1.2. Black spot 2: New bypass Karmali chak 70 feet to west on NH-30 (Ch. 193.15 to 193.6)

This black spot location is situated between Ch. 193.15 to Ch. 193.6 of NH-30. At km 194+855 which is bypass end point Y Junction towards
DeedarGanj. It is observed that multi axle vehicles are in substantial number passing through the stretch and conflicts with the MCW
carriageway traffic. No speed calming measures could be seen on the road. Improper merging of side road with the main road.

S. No Safety Concerns & Audit Findings Recommendations

1. The location has built-up section in the vicinity having bypass end • Short term Measures
point of Y Junction towards Deedarganj. (Refer Photo A) • Center Lane, edge lane, junction marking including pedestrian marking
to be incorporated.
• Road signs are recommended to be installed at priority basis for night
2. time delineation and to follow lane discipline.
Location is at curve and high speed vehicles are conflicting with the
bypass road while merging/ Diverging n speed calming measures • Speed limit sign, advance direction sign, Speed calming measures
are missing. Missing lane marking and road signs at junction. (Refer like rumble strips are to be provided on the bypass road.
Photo D) • Bypass junction to be developed with proper tapering length, road
3. Bypass end point of Y-junction is covered by sand. (Refer Photo B) marking and road signs.
4. • Median opening to be installed with solar blinkers.
Improper merging of bypass road with the main road. (Refer Photo C,
D) • Information Sign for “Accident prone zone” required to be provided it is
not installed.
• Long term Measure
• It is recommended for grade separation with both side slip lane having
appropriate span and vertical clearance of 5.5m considering turning
movement count at this junction.
• General Maintenance
• The road dust along Junction Island and carriageway are required to
be cleared.
• It is to be ensured that street lights are in working condition.
Reference: Black Spot Images of New bypass Karmali chak 70 feet to west on NH-30 (Ch. 193.15 to 193.6)

Photo : A Photo : B Photo : C

Photo: D