Bus Rapid Transit, Volume 2: Implementation Guidelines (2003) / Chapter Skim
Currently Skimming:
Pages 72-86
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 72... ...
4-1 CHAPTER 4 TRAFFIC ENGINEERING FOR BRT Traffic-transit operations integration is an essential component of the planning design and operation of BRT running ways. Close working relationships between traffic engineers and transit planners is essential in developing bus lane and busway designs, locating bus stops, and applying traffic controls.
|
From page 73... ...
4-2 Curb parking can be prohibited at all times or just during rush hours. When BRT uses curb bus lanes throughout the day, it is possible to use distinctively colored pavements to identify the lanes.
|
From page 74... ...
Estimated time lost per signal cycle by conflicting right turns and pedestrian volumes is shown in Table 4-2. For example, if there were 300 pedestrians per hour conflicting with 240 right turns per hour (5 and 4 per cycle)
|
From page 75... ...
turns, (2) reduce bus mileage, and (3)
|
From page 76... ...
traffic flow, will improve bus speeds and reliability. The underlying philosophy is to minimize overall person delay.
|
From page 77... ...
• Preemption results in changes to the normal signal phasing and sequencing to provide a clear path for oncoming buses. Because of its impacts to both signal coordination and pedestrian safety, it must be very carefully applied.
|
From page 78... ...
Special signal phases are required in special circumstances. Some illustrative examples of special bus phases are shown in Figure 4-5.
|
From page 79... ...
4-8 SUGGESTED TRAFFIC SIGNAL SEQUENCE FOR MEDIAN ARTERIAL BUSWAYS NOTE: BRT phases may be pre-timed or actuated Transitway BRT Median Busway BRT A B C Figure 4-4. Suggested traffic signal sequence for median arterial busways.
|
From page 80... ...
effective when signals are spaced at uniform intervals. In some cases (as along streets with heavily used bus lanes)
|
From page 81... ...
master and local traffic signal controllers. Chapter 7 provides technical details on various vehicle detection technologies and their relation to AVL.
|
From page 82... ...
(SOURCE: Levinson et al., 1975) Figure 4-7.
|
From page 83... ...
3. Advances and extensions can be more frequent than every other cycle only when buses are late.
|
From page 84... ...
mobiles, taxis, and trucks. Public perceptions of violations can ultimately affect the respect and support for BRT.
|
From page 85... ...
In the greater Houston, Seattle, and Washington, D.C./ Northern Virginia areas, the "HERO" program has become an important part of bus and HOV lane enforcement and public education. This program allows witnesses to call and report violators of the restricted lanes.
|
From page 86... ...
Levinson, H
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.