Traffic Study
T h e
U n i v e r s i t y
o f
S o u t h e r n
Q u e e n s l a n d
www.usq.edu.au
Traffic Parameters
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Introduction
Traffic data and understanding human factors is essential for proper road design and planning The traffic stream consists of • the driver • the vehicle and, • the environment
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Introduction
Traffic performance is impacted by: • Carriageway width • Number of lanes • Vertical and horizontal alignment • Type and condition of surface • Frequency and type of intersections • Road furniture • Terrain, and • Other conditions eg weather, lighting, signage, parking
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
The Road User
Design must also consider human factors including: • vision • reaction time • driver eye height • special road users (eg elderly)
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Primary Traffic Characteristics
We will concentrate on two traffic design parameters • Traffic Volume • Traffic Composition
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Traffic Volume
Measurement of Volume and Patterns • Patterns can vary significantly between peak, off-peak and seasonal • Measured by traffic studies ie traffic counts, surveys
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Traffic Volume
• Average Daily Traffic (ADT) = total number of vehicles over a number of days divided by number of
U n i v e r s i t y
o f
S o u t h e r n
Q u e e n s l a n d
www.usq.edu.au
Traffic Parameters
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Introduction
Traffic data and understanding human factors is essential for proper road design and planning The traffic stream consists of • the driver • the vehicle and, • the environment
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Introduction
Traffic performance is impacted by: • Carriageway width • Number of lanes • Vertical and horizontal alignment • Type and condition of surface • Frequency and type of intersections • Road furniture • Terrain, and • Other conditions eg weather, lighting, signage, parking
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
The Road User
Design must also consider human factors including: • vision • reaction time • driver eye height • special road users (eg elderly)
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Primary Traffic Characteristics
We will concentrate on two traffic design parameters • Traffic Volume • Traffic Composition
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Traffic Volume
Measurement of Volume and Patterns • Patterns can vary significantly between peak, off-peak and seasonal • Measured by traffic studies ie traffic counts, surveys
T h e T h e
U n ii v e rr s ii tt y U n v e s y
o ff o
S o u tt h e rr n S o u h e n
Q u e e n s la n d Q u e e n s a n d
Traffic Volume
• Average Daily Traffic (ADT) = total number of vehicles over a number of days divided by number of