ID number of items

Item content

Mean (SD)

Factor 1

Perceived diversity of motorcycles (α = 0.87, Aiic = 0.69, Ev = 14.45%)

3.56 (0.91)

M2

There are a lot of motorcycles on the road.

3.81 (1.07)

M3

There are several types of motorcycles on the road.

3.57 (0.96)

M5

There are several motorcycles around bus stops on the road.

3.31 (1.02)

Factor 2

Perceived dangerous vehicles interaction (α = 0.82, Aiic = 0.54, Ev = 14.24%)

3.13 (0.82)

M1

There is only one non-lane-based vehicle, that is, motorcycles.

3.20 (1.03)

M6

It is dangerous to drive on roads full of all kinds of vehicles.

3.31 (1.04)

M7

It is difficult to approach and stop at the bus stops.

3.05 (0.98)

M8

It is difficult to leave the bus stops.

2.96 (1.00)

Factor 3

Perceived motorcyclists’ driving behaviours (α = 0.96, Aiic = 0.84, Ev = 25.89%)

3.46 (1.2)

M9

Motorcyclists engage in several overtaking manoeuvres on the road.

3.50 (1.18)

M10

Motorcyclists engage in several swerving manoeuvres on the road.

3.45 (1.33)

M11

Motorcyclists engage in several weaving manoeuvres on the road.

3.44 (1.37)

M12

Motorcyclists engage in several vehicle filtering manoeuvres on the road.

3.52 (1.29)

M13

Motorcyclists engage in several tailgating manoeuvres on the road.

3.41 (1.31)

Factor 4

Perceived road users’ traffic habits (α = 0.82, Aiic = 0.54, Ev = 17.65%)

3.28 (0.82)

M15

Road users tend to ignore traffic signs

3.11 (1.37)

M16

Road users are only concerned about how to move quickly

3.14 (1.41)

M17

Road users comply tacitly with first-come-first-serve discipline and do not follow traffic rules.

3.04 (1.32)

M18

Everything about the traffic flow is unpredictable.

3.76 (0.93)