Intensive travel time: an obligation or a choice?

European Transport Research Review

An Open Access Journal

Table 2 Geographic and transport system indicators and sample size for the 8 cities

City	Area covered by survey (km²)	Number of zones/municipalities	Average surface area (km²)	Population	Sample size
Brussels	557	33	16.9	1, 309, 478	982
Grenoble	310	36	8.6	386, 886	4934
Lyon	490	76	6.4	1, 226, 052	9465
Rennes	609	46	13.2	358, 561	6900
Strasbourg	305	32	9.5	449, 036	3317
Bern	422	36	11.7	333, 334	1163
Geneva	228	42	5.4	410, 261	1688
Zurich	906	99	9.2	983, 937	1818
City	Public transport system (1)	Parking limitation	Cycling infrastructure	Policy on car access to city centre
Brussels	S+T+B	Weak constraint	Medium development	Favourable to car
Grenoble	T+B	Weak constraint	Medium development	Favourable to car
Lyon	S+T+B	Weak constraint	Low development	Incentive
Rennes	B	Weak constraint	Low development	Incentive
Strasbourg	T	Weak constraint except in city centre	High development	Restrictive
Bern	T+B	Strong constraint	High development	Restrictive
Geneva	S+T+B	Weak constraint except in city centre	Medium development	Favourable to car
Zurich	S+T+B	Strong constraint	High development	Restrictive