Chapter 4 - trip generation

Question 1

Define a trip/journey

Answer 1

One way movement from origin to destination

Question 2

Differentiate between home-based and non-home-based trip

Answer 2

HB - This is one where the home of the trip maker is either the origin or the destination of the journey.
NHB - neither end of the trip is the home of
the traveller.

Question 3

Define trip production

Answer 3

home end of HB trip or origin of NHB trip

Question 4

Define trip attraction

Answer 4

non-home end of HB trip or destination of NHB trip

Question 5

Why do we need to distinguish between different journey characteristics?

Answer 5

better understanding of travel and trip generation models can be obtained if journeys by different characteristics are identified and modelled separately

Question 6

List journey characteristics:

Answer 6

• By purpose - work, school, shopping, recreation
• By Time of day - peak and off-peak, complicated by tours
• By Person Type
• income level;
• car ownership;
• household size and structure.

Question 7

Factors affecting personal trip production:

Answer 7

• Income
• Car ownership
• Family size
• Household structure
• Value of land
• Residential density
• Accessibility

Question 8

Factors affecting personal trip attraction:

Answer 8

• Space available for industrial, commercial / other services
• zonal employment

Question 9

Factors affecting freight trip productions & attractions:

Answer 9

• Number of employees
• Number of sales
• Roofed area of firm
• Total area of firm
• Type of firm?
• Impact of online shopping / e‐groceries?